Rewrite? I thought Oda's writing of Kaido is peak fiction? 
Kidding aside:
1. Keep his title and his design;
2. Make his W against Oden a clean one and don't make him an Oden-simp;
3. Make him a pure Straw Nihilist, which explains why he craves to destroy himself and the world. Naturally, his crew should also have this belief;
4. Make him born as a failed WG experiment who had to grow up knowing only a meaningless existence laced with torture and survival.
He then met Rocks after Rocks attacked the WG facility he was in and became fascinated by (and maybe even worshipped) his chaotic way of life and found meaning in Rock's ambition to be the King of the World.
However, as we all knew, Rocks failed and this deeply traumatized Kaido. He became so utterly cynical that he came to see the existence of the world as something to be destroyed since it doesn't really have a greater meaning to it. This is why he ultimately wants the One Piece: he does not know what it is, but he wants to find to put an end to everyone and everything.
5. Keep him a dragon, but change his elemental powers into Dark Matter Manipulation, which can only be resisted physically by people with ACoA or ACoC. This would explain why anybody who is not a ACoA or a ACoC user must not fight him: they risk getting disintegrated in seconds.
Also, call his DF "the Darkest Devil Fruit" just like Teach's is "the Devil Fruit closest to the Devil himself."
Kidding aside:
1. Keep his title and his design;
2. Make his W against Oden a clean one and don't make him an Oden-simp;
3. Make him a pure Straw Nihilist, which explains why he craves to destroy himself and the world. Naturally, his crew should also have this belief;
4. Make him born as a failed WG experiment who had to grow up knowing only a meaningless existence laced with torture and survival.
He then met Rocks after Rocks attacked the WG facility he was in and became fascinated by (and maybe even worshipped) his chaotic way of life and found meaning in Rock's ambition to be the King of the World.
However, as we all knew, Rocks failed and this deeply traumatized Kaido. He became so utterly cynical that he came to see the existence of the world as something to be destroyed since it doesn't really have a greater meaning to it. This is why he ultimately wants the One Piece: he does not know what it is, but he wants to find to put an end to everyone and everything.
5. Keep him a dragon, but change his elemental powers into Dark Matter Manipulation, which can only be resisted physically by people with ACoA or ACoC. This would explain why anybody who is not a ACoA or a ACoC user must not fight him: they risk getting disintegrated in seconds.
Also, call his DF "the Darkest Devil Fruit" just like Teach's is "the Devil Fruit closest to the Devil himself."
Agreed for new chars assisting Luffy to escape instead of Kaidou being nerfed. Also agreed on sturdy legs instead of chicken legs lol. Especially agreed on the plot not restricting Kaidou from killing a few Scabbards, Minks, but imo he should even kill 1-2 Supernovas, and most importantly once he gets serious, i always imagine serious Kaidou oneshotting Zunisha to display dominance to the extreme, plummeting the alliance's morale to zero.
