I've been wanting this since the Sims 1. The option to choose your Sims' sexual orientation (gay, bi, straight.) That way when you befriend someone you don't get wants to kiss/etc with one of your ...
But I'd like for my sim's sexual orientation to be random when they're born in game. Or have them naturally attracted to certain sims. (like with the lightning bolts in Sims2)
Wish the astrological signs played more of a role in their love life too :(