Quote Originally Posted by thegreatonemal View Post
The omega fights happen for a reason. It's trying to making a new opponent for itself and its testing it and our potential but have a tournament arc, the winner gets made in full and fights omega so it can evolve. The omega raids also introduce creation magic for the first time and one ups them by alpha growing a soul something the Acians and their entire society could never do with their creations.
I'm not saying they don't happen for a reason, just that the actual content of the fight does not form part of the larger story. Each one is disconnected pocket universe and you could substitute anything you like, whereas the Coils and Alexander occur in real space and show you moving through a zone - although the architecture doesn't seem particularly logical and you could still switch or substitute bosses, just within a smaller thematic scope.