That's why i still have my theory that i will die upon.
Because there was a main villain that Zoro did defeat, gave the last hit, and that was Captain Morgans, during Zoro's introduction "arc".
Luffy beat the shit out of Captain Morgans, but Helmeppo took Koby as hostage and used a threat to make Luffy stop hitting Captain Morgans. Then, when Luffy turned to Helmeppo and decided to attack him and save Koby, Captain Morgans used the opening to attack Luffy from behind.
Do you know what this reminds us? Yeah, that's right, Oden getting tricked against Kaido.
But the problem then was that Oden used to do things alone, all by himself, that was his biggest flaw. While Luffy has no problem asking for help and letting his crewmates do what needs to be done.
So, against Captain Morgans, Luffy trusted Zoro to defeat the Captain while he was focused on defeating Helmeppo.
I think the same thing could happen in Wano.
Someone uses Yamato / Momo / Tama as a hostage when Luffy is beating Kaido, Luffy stops beating Kaido to go help the hostage, and then Kaido uses the opening to defeat Luffy, just like he did with Oden. But this time, Zoro will be there, and deliver the final hit to Kaido. Making a perfect circle from his introduction arc and his New World arc. Also concluding the Ryuma parallels and lettting Luffy overpower Kaido by himself.
Both ZKK can happen and Luffy gets to defeat the villain.
I've been saying it for months now.