I don't mind ZKK but the problem lies on how Oda will deliver it without mocking Zoro. If Zoro kills Kaido while he's down, it will shames on Zoro's code of honor, if Zoro kills Kaido in the last moment along with Luffy or right after Luffy, it would make it look like Luffy never defeats his opponent which overshadowed Luffy's achievement which is something that even Oda have to consider.