My current ZKK has Kaido emerging after giving one leg and one arm to Big Mom for her to survive. Zoro killing Kaido with two limbs missing isn't a nerf if Kaido's in full Zoan, where he doesn't use his limbs. Jack took a leg and arm from Inu and Neku, and, when Big Mom's starving, Kaido will fulfill his debt to her and feed her his own limbs. Then, Big Mom breaks them out, and we eventually get into ZKK.
Once you said that the flaming torch with its position inverted against Luffy's BG could mean Kaidou's victory, and it's a good hypothesis. But before that, Kaidou's flaming torch could be even more powerful if he wasn't carrying the island.