No outcome will satisfy the anti ZKK. They manage to come up with one or two new headcanon with every chapter that's been released since 1000 that removes Zoro out of the fight against the Emperors
Pro ZKK will be less happier if it happens against a defeated Kaido. It's still a big feat which even Kaido himself, the Marines and Emperors couldn't achieve. Everything leading up to it though (the monstrous samurai like Oden comment, atleast matching the wound Oden inflicted on Kaido, potential CoC and/or black blade moment) will make up for it.