This is actually one of the things I dislike about the idea of a NG+. this seems more going into an AU where Mila is more prepared for the battles she faces. I mean, the sheer amount of content to be added with this addition would be more like creating an entirely new game. right from the start, winning the scripted "Vampire" fight in the woods (Chapter 2) would change the games canon. For spoiler reasons, I won't delve into all the scenes that would be changed but there's way too many to put here anyways.