It seems upgrade system and value of some weapons is already being redone, so with this covered, the only thing left for this amazing experience to become real killer is ANIMATING arts for all the characters, at least most suitable ones. That will be certainly mind-blowing.
And of course a real Dark Knight fight somewhere on the outskirts of final location. With her probably being tanky like hell and using magic like paralysis which you will try desperately to cancels with making her trip, or being pummeled helplessly. But maybe with some new moves.