1. if sasuke does the swap with one of madara's TSB madara is gonna cover himself with another one or limbo is going to react for madara. madara reacted to ftg, where does it state sasuke is faster than FTG?
All Sasuke needs to do is initiate an attack against Madara. He uses multiple TSBs to form a single shield, and when they combine, they can all be swapped with at the same time. Obito's Gudoudama shield was being cracked by
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and a
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. Any attack performed by Rinnegan Sasuke's Susano'o or Bijuu Susano'o are tiers above those other attacks; TSB shield gets destroyed and Madara uses them better for defense than offense.
It doesn't matter if Madara reacted to FTG or not. Even if the speed of the technique is instant, Sasuke's striking speed >>> Minato and Tobirama's. FTG is also more predictable as the user teleports to a set marking, and Sasuke doesn't have this restriction. Naruto was hard pressed to sense and dodge Sasuke's Amenotejikara, even failing to completely evade damage. As confirmed by the DB, Naruto's speed and reaction time are above Madara's. Madara even failed to successfully evade Sasuke's foot speed; he isn't reacting to it. Limbo is only as fast as Madara; if Madara can't react to it, he can't use Limbo to block or swap, assuming they're not already active.
2. madara regenerates and would tank all those attacks.
Regeneration takes time. Sasuke's Susano'o was able to perform several dozen or more slashes with his Susano'o, destroying two massive CTs in the same amount of time it took for TBBFRS to reach their targets and explode. If Sasuke keeps attacking continuously, there will be no time for him to recover. Sasuke can take this chance to utilize the Outer Path to absorb Bijuu chakra from Madara. Obito, despite being weakened and on the verge of death, was able to take enough chakra from Madara to form a TSB and also got a small piece of Shukaku and Gyuuki's chakra, and this was all was done while Madara was not weakened at all. Sasuke is far stronger than that Obito, so the amount of chakra he can take will much greater as well, adding to his own power whilst weakening Madara. Bijuu Susano'o will also be able to resonate with the bijuu chakra in Madara and cause their
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. Sasuke can take the chance to take more of the chakra while is Madara weakened and add it to his Susano'o with the Outer Path/Preta Path.
3. kaguya's chakra palms negged sasuke's susano, kaguya is the juubi, a juubi TBB will blow it up.
Juubidama is far too slow to create and launch, not to mention the
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which launches it must be summoned first. Sasuke can easily destroy the tree before the attacks are created. Since the majority of this battle will be taking place in the air, the TBBs will be easily dodged by Sasuke's Susano'o. Sasuke could even swap only Madara's body with himself (
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), and Madara would be hit with his own attack. A direct hit with a Juubidama will cause considerable damage even to a Juubi Jin.
4.madara would tank enton.
Not if his body and or Rinnegan is cut into multiple pieces. While he is regenerating, he won't be able absorb the flames while his Rinnegan isn't there (Juubi regeneration might not even be able to replicate a Rinnegan as even RT failed to do so) or negate it as Sasuke's attacks contain Senjutsu. Sasuke can also shape Enton into spears as he did in the
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, thus further damaging Madara's body.
5. sasuke has to charge indra's arrow and needs the bijuu's chakra, he can't just do one attack after the other. regardless indra's arrow wouldn't kill a juubi jin, madara can literally tank it , limbo it or simply shinra tensei' it.
It wasn't stated in the OP which version of Sasuke this is, so I'm going to assume it's his strongest form. Indra's Arrow obliterates Madara completely. Limbo will remain Madara's fastest technique; that is why he used it to try and stop Naruto's YRS, but failed. The more chakra put into ST, the longer it takes to use, and the longer the cooldown will be, hence why he wasn't able to activate before Naruto threw the attack. His clones aren't tanking Indra's Arrow either, and even if he manages to swap with one, he will still be within the AoE of the attack.