As much as I disliked some mechanics of Kampani Girls the fact that you could choose a leader girl which used a strategy of a kind for the whole unit - focus the weakest, focus the strongest, spread the damage, etc etc. As much as it was quite primitive, it would be nice if there was something like a simple combat menu, where you could choose one of three options (focus weakest, strongest, all).
Personally - I would like if the game was turn based and you could actually control your own units, I really hates this "automatic combat" all of the Nutaku games have going for it. Not expecting Tactics Ogre or Final Fantasy sort of control, but being able at least to select your targets would be nice (and for the lazy ones the usual "auto" mode option would be of course included as well).
Mainly due to the fact that it doesnt feel like a game at all, you pretty much dont do a thing.