I saw some people speculating about the ending fitting so perfectly, it's almost like SE planned the game to fail from the start. I think the rough idea of Dalamud coming down and unleashing whatever is in there was there from the start. What SE didn't plan is the game failing part, simply because they lost so much money with this. It just doesn't make sense from the business standpoint. They probably planned we would stop the threat somehow, closing a history chapter and leading to the next expansion.
