This is sort of a headcanon of mine. There’s a distinct lack of narrative tension in the Yonkos vs worst generation fight.

Here’s how my version would go.

In my version, the events leading up to big mom and Kaido using “conquest of the sea” would remain the same as in canon. The main difference is that instead of Zoro blocking the “conquest of the sea”, it would be Killer. Realistically, Zoro should not have been able to survive that attack in the first place. Killer would use his scythes to block the attack, but would then be overwhelmed and killed. This would be a great opportunity to create more drama in the story and give Kidd some much needed character progression and motivation to kill Big mom later. Also, the death of Killer (while protecting his nakama from a joint attack from 2 Yonkos) would be a magnificent send-off for Killer to complete his character arc.

The death of Killer during the Onigashima raid would hit far harder than his defeat at the hands of Shanks imo. Witnessing the death of his closest nakama, Kidd would go into a rage and reveal his damned punk attack early. Kaido would then use his boro breath to counter it, resulting in a beam struggle which Kidd actually wins, to everyone’s shock. Kaido would be visibly shaken by the encounter, and would have visible burn marks where the damned punk beam hit him, but the fight would proceed as it normally does in canon.

The next big thing that Killer does in the canon onigashima raid is fight with Basil Hawkins and defeat him. In my opinion, Killer’s role in defeating Hawkins could easily be filled by X-Drake. This would be a good chance for Drake to prove himself to the audience as an strong fighter as well as a capable leader within S.W.O.R.D. After his fight with CP0, and all the damage he took from fighting Guernica, having him defeat Basil Hawkins would make X-Drake an even bigger chad than he already is. Also, having X-Drake deduce the lack of arm loophole to Hawkins voodoo doll technique in order to save Kidd would prove that he is also very intelligent.

Finally, Killer would be buried alongside Izzo, and the other fighters who died during the raid. Zoro and Kidd would both go to visit the grave of Izzo and Killer. Killer would be treated as an honorary Wano Samurai for his role in defeating the Yonko.

That’s the end of my headcanon. What do you think?