Alot, I mean ALOT of people are saying Sabo will fight(and defeat/kill) Akainu EoS. I personally think Sabo won't make to EoS as he will be killed by either Akainu or Blackbeard before the final timeskip.
Timeskip? Yes. There WILL be another timeskip before EoS. Luffy isn't even Admiral level yet and he is suddenly gonna dramatically increase in strength in less than a year or so? Nonsence. Luffy only increased by one level after 2 years of training. So the big question is: "Whats gonna trigger another timeskip?" The same thing that caused carefree Luffy to wise up, see his weaknesses and train for 2 years to prepare for the New World...
The Death of a Brother with the Mera Mera no mi.
Ace's death made Luffy wise up and train, but he is still that same carefree idiot from 2 years ago. He is still overconfident and prefers brawn over brain. Luffy will make it half-way through the New World through alliances. Kaido and Big Mam will fall because of Luffy's alliances. For the other half of the New World, you need your own strength. Sabo's fate became clear when he ate the Mera in the first half of the New World. His death will cause Luffy to once again train for a few years to prepare himself for the hardships ahead.
Ace=the trigger for Luffy to train and grow stronger in the Grand Line, causing the first timeskip.
Sabo=the trigger for Luffy to train and grow stronger in the first half of the New World, causing the second and final timeskip.
