This is what I think will happen in this saga. If you can't read all of it at least read the last one.
Dressrosa Arc
Zou arc
Wano Arc
Capone Arc
Kaido Arc
Dressrosa Arc
Leo will get into the palace to save Princess Mansherry.
Riku goes to the palace too to steal all of the money Doffy stole so that he can get eough money to repair the damage done to Dressrosa after the arc before the money gets destroed destroyed in the fights.
Cavendish soon goes up to Level 4 and fights Trebol and manages to win with Hakuba.
The Coliseum Fighters beat the Executives.
Franky vs Pink: Franky shows off his new abilities and beats Pink.
Robin and Bart vs Gladius: Robin and Bart mid diff Gladius.
Ussop vs Sugar: Ussop high diffs Sugar.
Pica vs Zoro: Pica uses some trick on Zoro to compete with Zoro, who then uses Asura to beat Pica high diff.
Diamante vs Kyros and Rebecca: Diamante fights Kyros and Rebecca and gets beaten by an attack from both of them after Rebecca mans up and actually decides to draw blood.
Doffy vs Law: Law and Luffy separate when looking for Doflamingo in the palace, Doffy ambushes Law and makes him go unconscious after injuring him, and then Luffy enters.
Luffy vs Doflamingo: Doffy seems to have an advantage on Luffy, but Luffy is pissed off at him and at the end uses gear stacking along with CoA to use Gomu Gomu no Jet Elephant Bullet, which destroys the Palace along with level 4, and Doffy loses extreme diff after that attack knocks him out.
Sabo vs Fujitora: Sabo shows off the rest of his Dragon techniques and combines his moves with fire because of the MMnM. Fujitora shows his swordsmanship skills and his DF moves. They both seem to be roughly equal when their fight gets interrupted after Doffy gets defeated. Fuji stops fighting now that he has to reason to fight Sabo since he was just stalling to that he wouldnt have to help Doffy. Despite this, Sabo still made him go serious.
Sabo and Luffy talk to each other and Sabo tells Luffy what he's been doing and why he couldnt help Ace at MF.
Luffy then goes to Zou to meet up with Sanji.
After being betrayed by Doffy, Bellamy joins the SH Pirates.
The Gorosei are pissed off that Luffy stopped their trade of SMILEs with Kaido. Thats right, Doflamingo was just a medium to that if someone inspected the SMILE trade they would be lead to a pirate instead of their "good" leaders. In return for giving Kaido SMILEs, Kaido must protect the WG from the other yonkous, as seen when he tried to attack WB.
Luffy, Sabo, and Zoro get a new bounty. Luffy's is 600 million, Zoro's is around 300 million, and Sabo's is 650 million.
Riku goes to the palace too to steal all of the money Doffy stole so that he can get eough money to repair the damage done to Dressrosa after the arc before the money gets destroed destroyed in the fights.
Cavendish soon goes up to Level 4 and fights Trebol and manages to win with Hakuba.
The Coliseum Fighters beat the Executives.
Franky vs Pink: Franky shows off his new abilities and beats Pink.
Robin and Bart vs Gladius: Robin and Bart mid diff Gladius.
Ussop vs Sugar: Ussop high diffs Sugar.
Pica vs Zoro: Pica uses some trick on Zoro to compete with Zoro, who then uses Asura to beat Pica high diff.
Diamante vs Kyros and Rebecca: Diamante fights Kyros and Rebecca and gets beaten by an attack from both of them after Rebecca mans up and actually decides to draw blood.
Doffy vs Law: Law and Luffy separate when looking for Doflamingo in the palace, Doffy ambushes Law and makes him go unconscious after injuring him, and then Luffy enters.
Luffy vs Doflamingo: Doffy seems to have an advantage on Luffy, but Luffy is pissed off at him and at the end uses gear stacking along with CoA to use Gomu Gomu no Jet Elephant Bullet, which destroys the Palace along with level 4, and Doffy loses extreme diff after that attack knocks him out.
Sabo vs Fujitora: Sabo shows off the rest of his Dragon techniques and combines his moves with fire because of the MMnM. Fujitora shows his swordsmanship skills and his DF moves. They both seem to be roughly equal when their fight gets interrupted after Doffy gets defeated. Fuji stops fighting now that he has to reason to fight Sabo since he was just stalling to that he wouldnt have to help Doffy. Despite this, Sabo still made him go serious.
Sabo and Luffy talk to each other and Sabo tells Luffy what he's been doing and why he couldnt help Ace at MF.
Luffy then goes to Zou to meet up with Sanji.
After being betrayed by Doffy, Bellamy joins the SH Pirates.
The Gorosei are pissed off that Luffy stopped their trade of SMILEs with Kaido. Thats right, Doflamingo was just a medium to that if someone inspected the SMILE trade they would be lead to a pirate instead of their "good" leaders. In return for giving Kaido SMILEs, Kaido must protect the WG from the other yonkous, as seen when he tried to attack WB.
Luffy, Sabo, and Zoro get a new bounty. Luffy's is 600 million, Zoro's is around 300 million, and Sabo's is 650 million.
Zou arc
Big Mom traps the SHs on the Sunny and decides to have some fun with them. She has Tamago and Pekoms fight the SHs. Tamago and Sanji fight 1v1 and Pekoms fights Brook, Chopper, Nami, and Caesar.
Tamago vs Sanji: Tamago obviously uses his legs to this would be a good fight for Sanji. I think that Sanji will win high-extreme diff.
Pekoms vs Caesar, Brook, Chopper, and Nami: He is stronger than all of them, but cant handle all 4 at once. Team 2 wins high diff.
During the fights the Vivre Card that Lola gave to Nami slowly moves towards Big Mam.
Big Mam then is about to send Bobbins and Three eyes to finish them off, but then the Vivre Card touches Big Mom, and she realizes it is a vivre card of her. She asks the SHs why they have this vivre card, and Nami has a flashback of Lola giving her the card. Nami asks BM if she has a daughter named Lola, and she says yes. Nami then explain what happened at TB and how they saved Lola. Big Mom not only forgives the SHs, but still feels like she owes them for what they did. The SHs then go to Zou, where the other SHs soon arrive at.
The SHs and Law meet up with Bepo and the other Heart Pirates. They talk about their plan from now on and how they will handle Kaido.
Caesar feels sorry for what he did, and joins the Heart Pirates since he has nowhere to go.
Tamago vs Sanji: Tamago obviously uses his legs to this would be a good fight for Sanji. I think that Sanji will win high-extreme diff.
Pekoms vs Caesar, Brook, Chopper, and Nami: He is stronger than all of them, but cant handle all 4 at once. Team 2 wins high diff.
During the fights the Vivre Card that Lola gave to Nami slowly moves towards Big Mam.
Big Mam then is about to send Bobbins and Three eyes to finish them off, but then the Vivre Card touches Big Mom, and she realizes it is a vivre card of her. She asks the SHs why they have this vivre card, and Nami has a flashback of Lola giving her the card. Nami asks BM if she has a daughter named Lola, and she says yes. Nami then explain what happened at TB and how they saved Lola. Big Mom not only forgives the SHs, but still feels like she owes them for what they did. The SHs then go to Zou, where the other SHs soon arrive at.
The SHs and Law meet up with Bepo and the other Heart Pirates. They talk about their plan from now on and how they will handle Kaido.
Caesar feels sorry for what he did, and joins the Heart Pirates since he has nowhere to go.
Wano Arc
The SHs, Heart Pirates, Kin'emon, Momo, and Kanjuro then head towards Wano.
They explore Wano and there a lot of samurai challenge Zoro because he has Shuusui. Eventually word that Shuusui is in Zoro's hand spreads to the Shogun of Wano. Who then tracks down Zoro to see if he is trully worthy of possessing that sword.
Meanwhile, Kaido's 2nd mate finds Luffy at Wano and fights him.
Zoro vs Shogun: Zoro goes all out and wins high-extreme diff, proving that he is worthy of handling Shuusui. The Shogun also gives Zoro a prize for winning, Kitetsu II.
Luffy vs Kaido 2nd Mate: Luffy wins very high diff and the 2nd Mate flees back to Kaido.
Kin'emon, Momo, and Kanjuro join the Heart Pirates.
They explore Wano and there a lot of samurai challenge Zoro because he has Shuusui. Eventually word that Shuusui is in Zoro's hand spreads to the Shogun of Wano. Who then tracks down Zoro to see if he is trully worthy of possessing that sword.
Meanwhile, Kaido's 2nd mate finds Luffy at Wano and fights him.
Zoro vs Shogun: Zoro goes all out and wins high-extreme diff, proving that he is worthy of handling Shuusui. The Shogun also gives Zoro a prize for winning, Kitetsu II.
Luffy vs Kaido 2nd Mate: Luffy wins very high diff and the 2nd Mate flees back to Kaido.
Kin'emon, Momo, and Kanjuro join the Heart Pirates.
Capone Arc
Coby and Helmeppo, who have been training a lot over the TS, Coby is now a RA and Helmeppo is Commodre. While on their battleship, they get a call that Capone has been terrorizing a nearby town, they go and fight the Capone Pirates. Coby fights Capone and Helmeppo fights Capone's First Mate.
The Marine fodder fight the pirate fodder.
Helmeppo vs First Mate: Helmeppo wins high diff.
Coby vs Capone: During the fight, Coby shows off his Haki and has learn 6 of the Rokushiki. Capone has improved the content inside of him that he can use because of his DF. Near the end of the fight, Capone says that his DF allows him to fit anyone weaker than him inside himself, and that he managed to get a Pacifista. The new Pacifistas can now charge up their light attack that they launch from their mouth which makes it stronger, but the more they charge it up, the more battery they lose. Capone has been charging his Pacifista up the entire fight and at the end launches it at Coby. Coby with CoA and Tekkai manages to survive it, but is very injured. Capone can tell that Coby survived it, but he is all out of firepower so he grabs a sword and desperately attacks Coby. Coby dodges it and uses this to finish off Capone.
[video=youtube;MWCzI5LCE0g]https://www.youtube.com/watch?v=MWCzI5LCE0g[/video]
Coby turns Capone into the Marines. Helmeppo becomes a RA and Coby becomes a VA.
The Marine fodder fight the pirate fodder.
Helmeppo vs First Mate: Helmeppo wins high diff.
Coby vs Capone: During the fight, Coby shows off his Haki and has learn 6 of the Rokushiki. Capone has improved the content inside of him that he can use because of his DF. Near the end of the fight, Capone says that his DF allows him to fit anyone weaker than him inside himself, and that he managed to get a Pacifista. The new Pacifistas can now charge up their light attack that they launch from their mouth which makes it stronger, but the more they charge it up, the more battery they lose. Capone has been charging his Pacifista up the entire fight and at the end launches it at Coby. Coby with CoA and Tekkai manages to survive it, but is very injured. Capone can tell that Coby survived it, but he is all out of firepower so he grabs a sword and desperately attacks Coby. Coby dodges it and uses this to finish off Capone.
[video=youtube;MWCzI5LCE0g]https://www.youtube.com/watch?v=MWCzI5LCE0g[/video]
Coby turns Capone into the Marines. Helmeppo becomes a RA and Coby becomes a VA.
Kaido Arc
The SH and Heart Pirates go to Kaido's favorite island where they meet X Drake.
X Drake is now a high ranking officer in the Kaido Pirates, and reveals he has only worked under Kaido so that he could bring him down because of Kaido's alliance with the WG. He then allies with them.
The alliance then attacks the Kaido Pirates. the 3 Captains fight Kaido while their crewmates fight Kaido's crewmates.
The Kaido Pirates beat the SH, Heart, and Red Flag Pirate crewmates.
Kaido vs 3 Supernovas: They underestimated Kaido and he wins mid-high diff. X Drake buys time for the other 2 and their crews to escape. He tells them to grow stronger and that he knows they will eventually beat Kaido.
The Heart and SH Pirates separate while fleeing so that Kaido cant kill all of them if he catches up.
A few days later Kaido finds the SHs and is about to attack them, but then the Big Mom Pirates show up to fight the Kaido Pirates because she still wants to repay the Straw Hats for saving Lola. The SHs then use that time to escape.
When they are escaping, they pass by one of their worst enemies, the Blackbeard Pirates at an island. Luffy hates BB and cant control himself, so he stops the ship and attacks BB even though the other SHs are telling Luffy that Big Moms and X Drake's sacrifice would be useless if they fight another yonkou and die, but he doesnt listen. Zoro and Sanji go in to help, but get intercepted by Shiryuu and Burgess.
Sanji vs Burgess: Burgess has gotten stronger since Dressrosa because during that time the BB PIrates killed Urouge and give Burgess his DF, so his attacks are now much more poweful. Sanji gets a few DJ kicks in on Burgess, but they do nothing because Sanji's kicks arent powerful enough yet to hurt a big guy like Burgess. Burgess then low diffs Sanji and completely breaks on of Sanji's legs.
Zoro vs Shiryuu: Over the TS, the BB Pirates killed Jozu, who sacrificed himself to let the other WB Pirates escape when BB attacked them. Shiryuu then got his DF. Shiryuu isn't even going seerious on Zoro and lets him hit his diamond body a few times just to remind Zoro that he cant cut diamond yet. Zoro desperately uses Shishi Sonson, and Shiryuu is now tired of playing games to he blocks Zoro's attack with his diamond sword, breaks Kitetsu III, and gives Zoro a huge scar like Mihawk did, but this one is in the opposite direction so Zoro now his an X shaped scar. Shiryuu low diffed Zoro.
Luffy vs Blackbeard: Luffy starts off by kicking BB the same way he did to Enel in Skypiea and sends BB flying back a little. Luffy then uses Gomu Gomu no Jet(means G2)Elephant(G3+CoA)Bullet on BB and it hits, BB is then rolling in pain like he usually does when hit by a powerful attack like when Ace hi him with Hiken or Luffy hit him at Impel Down. Blackbeard gets up and uses a new attack, Yami Yami: Darkness spikes. This attack can pierce someone and when it hits something it uses the darkness powers to pull stuff in, and a darkness spike can pull in everything in a 5 meter radius of it. BB uses 25 of these, and Luffy dodges them. Luffy then uses Gomu Gomu no Elephant Pistol, and BB counters it by using Liberation to shoot all of the land that he pulled in with his last attacks to counter Luffys attack. He then uses Vortex to pull Luffy in( vortex now pulls people in much faster). Luffy tries to kick BB when he gets close, but with CoO Teach steps to the side and then puts CoA and Gura Gura powers into his hand and hits Luffy. This is one of the strong Gura Gura punches and causes the whole island to violently tremble. Luffy loses low diff.
The other SHs use their long range attacks to distract BB and recover the M3. They get onto use Sunny and try to row away, but BB is slowly pulling them in. They then use Gaon Cannon on Blackbeard, which buys them enough time to Coup De Burst away from BB. The Blackbeard Pirates then head towards the Kaido vs Big Mom fight.
Meanwhile at Kaido's favorite island...
Big Mom vs Kaido: Big Mom's DF is an acid logia and Kaido has the best Zoan, they also have immense Haki. This battle is very intense and can even be felt from nearby islands. At the end of the battle, Kaido has beaten Big Mom high diff and killed her. The Kaido Pirates also killed the other BM Pirates.
The Blackbeard Pirates then show up, kill the Kaido Pirates, and steal Kaido's DF. Blackbeard now has the 3 strongest DF of each type: Logia(YYnM), Paramecia(Gura Gura no Mi), and Kaido's Zoan.
There is a lot of panic all over the world because of the incident at Dressrosa, the death of 3 Supernovas, the death of 2 yonkous, and BB becoming stronger.
Luffy, Zoro, and Sanji eventually recover. Zoro is upset that he couldnt become WSS with the cursed sword, Kitetsu III, but replaces it with the stronger Kitetsu II which he got at Wano. Sanji either cant recover his leg and has Franky and Chopper replace it with a robotic leg that can emit fire, so it can use DJ, or it recovers. Luffy got badly injured but didnt lose a sword or leg like Zoro and Sanji.
The SHs realize they need to become stronger and get an upgrade next arc just like they did at Enies Lobby.
X Drake is now a high ranking officer in the Kaido Pirates, and reveals he has only worked under Kaido so that he could bring him down because of Kaido's alliance with the WG. He then allies with them.
The alliance then attacks the Kaido Pirates. the 3 Captains fight Kaido while their crewmates fight Kaido's crewmates.
The Kaido Pirates beat the SH, Heart, and Red Flag Pirate crewmates.
Kaido vs 3 Supernovas: They underestimated Kaido and he wins mid-high diff. X Drake buys time for the other 2 and their crews to escape. He tells them to grow stronger and that he knows they will eventually beat Kaido.
The Heart and SH Pirates separate while fleeing so that Kaido cant kill all of them if he catches up.
A few days later Kaido finds the SHs and is about to attack them, but then the Big Mom Pirates show up to fight the Kaido Pirates because she still wants to repay the Straw Hats for saving Lola. The SHs then use that time to escape.
When they are escaping, they pass by one of their worst enemies, the Blackbeard Pirates at an island. Luffy hates BB and cant control himself, so he stops the ship and attacks BB even though the other SHs are telling Luffy that Big Moms and X Drake's sacrifice would be useless if they fight another yonkou and die, but he doesnt listen. Zoro and Sanji go in to help, but get intercepted by Shiryuu and Burgess.
Sanji vs Burgess: Burgess has gotten stronger since Dressrosa because during that time the BB PIrates killed Urouge and give Burgess his DF, so his attacks are now much more poweful. Sanji gets a few DJ kicks in on Burgess, but they do nothing because Sanji's kicks arent powerful enough yet to hurt a big guy like Burgess. Burgess then low diffs Sanji and completely breaks on of Sanji's legs.
Zoro vs Shiryuu: Over the TS, the BB Pirates killed Jozu, who sacrificed himself to let the other WB Pirates escape when BB attacked them. Shiryuu then got his DF. Shiryuu isn't even going seerious on Zoro and lets him hit his diamond body a few times just to remind Zoro that he cant cut diamond yet. Zoro desperately uses Shishi Sonson, and Shiryuu is now tired of playing games to he blocks Zoro's attack with his diamond sword, breaks Kitetsu III, and gives Zoro a huge scar like Mihawk did, but this one is in the opposite direction so Zoro now his an X shaped scar. Shiryuu low diffed Zoro.
Luffy vs Blackbeard: Luffy starts off by kicking BB the same way he did to Enel in Skypiea and sends BB flying back a little. Luffy then uses Gomu Gomu no Jet(means G2)Elephant(G3+CoA)Bullet on BB and it hits, BB is then rolling in pain like he usually does when hit by a powerful attack like when Ace hi him with Hiken or Luffy hit him at Impel Down. Blackbeard gets up and uses a new attack, Yami Yami: Darkness spikes. This attack can pierce someone and when it hits something it uses the darkness powers to pull stuff in, and a darkness spike can pull in everything in a 5 meter radius of it. BB uses 25 of these, and Luffy dodges them. Luffy then uses Gomu Gomu no Elephant Pistol, and BB counters it by using Liberation to shoot all of the land that he pulled in with his last attacks to counter Luffys attack. He then uses Vortex to pull Luffy in( vortex now pulls people in much faster). Luffy tries to kick BB when he gets close, but with CoO Teach steps to the side and then puts CoA and Gura Gura powers into his hand and hits Luffy. This is one of the strong Gura Gura punches and causes the whole island to violently tremble. Luffy loses low diff.
The other SHs use their long range attacks to distract BB and recover the M3. They get onto use Sunny and try to row away, but BB is slowly pulling them in. They then use Gaon Cannon on Blackbeard, which buys them enough time to Coup De Burst away from BB. The Blackbeard Pirates then head towards the Kaido vs Big Mom fight.
Meanwhile at Kaido's favorite island...
Big Mom vs Kaido: Big Mom's DF is an acid logia and Kaido has the best Zoan, they also have immense Haki. This battle is very intense and can even be felt from nearby islands. At the end of the battle, Kaido has beaten Big Mom high diff and killed her. The Kaido Pirates also killed the other BM Pirates.
The Blackbeard Pirates then show up, kill the Kaido Pirates, and steal Kaido's DF. Blackbeard now has the 3 strongest DF of each type: Logia(YYnM), Paramecia(Gura Gura no Mi), and Kaido's Zoan.
There is a lot of panic all over the world because of the incident at Dressrosa, the death of 3 Supernovas, the death of 2 yonkous, and BB becoming stronger.
Luffy, Zoro, and Sanji eventually recover. Zoro is upset that he couldnt become WSS with the cursed sword, Kitetsu III, but replaces it with the stronger Kitetsu II which he got at Wano. Sanji either cant recover his leg and has Franky and Chopper replace it with a robotic leg that can emit fire, so it can use DJ, or it recovers. Luffy got badly injured but didnt lose a sword or leg like Zoro and Sanji.
The SHs realize they need to become stronger and get an upgrade next arc just like they did at Enies Lobby.