Yeah, what do you do when reality itself isn't as gender-neutral as we think it ought to be?
It's not like games are based in reality in the first place, though, so my point is that if you want to make a game with 'realistic' gender roles AND make female characters not the gimp choice, I have no idea how you'd proceed. If you don't think female characters should be an appealing choice at all, then I suppose it's moot.