I dunno. Maybe this story is going to end up like Arifureta Shokugyo de Sekai Saikyou, where more than half of the series thus far takes place after the final battle! I'd be overjoyed at a few hundred chapters of Vandalieu literally taking Vida's reincarnation system and expanding it, maybe interacting with the gods of other worlds once under Rodecorte's dominion. The banter would be fantastic! The author already has everything set up to start a multiverse arc if he feels like it; it'd make the power-scaling more reasonable too.