Romance and dating are such a weak point in this game Dine Out gave us what little we do have but it's just not enough. What I want to see is the turn on/turn off system from Sims 2 it was such an amazing system that gave some realism to dating. Your Sim would go to the bar and with the turn on/off system it could scope the room to find Sims it was attracted to so if the Sim liked Sims with brown hair who were fit and had beards it would find the Sims with those characteristics and that is who it would be attracted to not just anyone like it is now.
They should also add in the chemistry system it either makes the relationship easier or harder to build which I liked.