I'm all for your supporters having a voice but not when it comes to fetishes, everyone will want something different. You should decide what fetishes you want, and you should not give it to demands of anyone.
I wouldn't be too open everyone will want something different and then you'll have to make a bunch of stuff optional which will slow down development, no matter how much people have convinced themselves otherwise.
Don't give in to demands like this or the floodgates will be open and everyone will try to control your game. If the freak wants futa they can play a futa game.
Jesus Christ, the moral grandstanding in the comments is both hilarious and nauseating at the same time. Anyway, what future tags are you planning? Harem? ntr/sharing? Pregnancy? futa/trans? femdom? What do you want to do?