I honestly don't even understand what you're trying to get at, at this point. You're acting like I am implying Zoro can't have his own separate fight, and contribute to helping take down Kaido, when nowhere in my posts did I imply that. It's completely possible that Zoro's does both.
And I never fully subscribed to the whole "Zoro will slay a dragon to replicate Ryuma's feat." in the first place. I only entertained the notion of this that the Zoro fanboys were so adamant about in the first place because I felt like it could be possible, but if he cuts a dragons head off, it'll be one that won't die because of it. And the perfect candidate for that was Orochi, because he has multiple heads. But I've stated many times that Oda will not ever have a member of the Straw hats kill a character on screen. With Orochi now out of the picture, Zoro cutting a dragons head off is never going to happen.
And even when I argued it would be Orochi, I still maintained Zoro would get a major fight on top of it, vs King. The only reason I bring up him fighting Queen now, is because he'd seem to be a good candidate durability wise for Zoro to be matched up against. And even that is just a possibility. It could still be King, and it won't be a durability feat, but rather a feat of cutting fire. Whatever his grand feat is this arc, it won't be cutting Kaido's head off.