The game IS GREAT. Love the sprites, love the animations.
I think it would be crazy and much much better if we could be able to customize the waifus, a couple of accessories, 2/3 outfits and different hairstyles (everything from their different canon appearences).
For what it is at the moment, for me, is a 8/10, but i'll give you 5 stars, knowing it'll get even better one day. (Waifu suggestion: Rias Gremory).