Well, I really don't think about 1C having an expansion set with such level of development right now. It's too soon to talk about that, don't you think?
Actually, playing as a female may be a little weird in a game with such history. I mean, for me, it wouldn't be disgusting that main character in expansion would be a female character, only if that feature improves the gaming experience, you know what I say
About others features that I think it would be good to be improved or added, here is a list (of course, based on what I say in the demo version):
-With units that can cast defensive spells on other friendly units, allow to click directly in the friendly unit to cast the spell, not have to click in the hability and then in the unit (in the case of some units that have 2 defensive spells, like priests, make one of them as a default option).
-Mark in the map screen (not in the mini-map) the position of the enemies.
-The same for the NPCs that brought you a quest.
-Change the colour of the 1C introduction screen (it hurts my eyes!! xD).
Well, as you can see, I say nothing about the units, the heroes, and habilities. This is because I think until we have the full version of the game, we can't imagine how much these parameters would influence in the main campaign of the game.
In fact, the small portion of the game we have seen in the demo is wonderful. The game has all the features a BTS gamer can wish, including an hex-based field of combat (I love them
).