I'm not sure I would like it if it weren't for the video game connection. I probably would still like it since I like horror movies. People seem to keep saying that only horror & game fans can enjoy this movie, but I don't see that as being a bad thing. I am a horror & game fan and I do enjoy this movie. I'm not a fan of war-films, but that doesn't make all war-films intrinsically bad. Anyway, things I liked in the movie were things I already liked from the games and without them the movie might have little left over. I doubt there will be a "perfect" game->film conversion of anything ever. Unless money is not a factor; but money is always a factor. The people with the money aren't the artists, and if they were, they'd probably have some "vision" to shape the product into.
Like what? The rebirth connection? Or the side-characters introduced in it? How rich the family owning that mansion was?
I've recently been reading theories about Xuchilbara & Lobsel Vith
ex: Xuchilbara = Valtiel = rebirth = butterflies = Maria
stuff like that. I think the sub-scenario just cements some theories about Maria. Unless there's more to it.