Sex should be in the game. Hetero-, Bi-, and Homo- sexual activities should be included. Prostitution can be done by the PC for cash, also the PC can pay to get laid. Companions will do you. Slaves can be dominated. Also would like to see a brothel or "bunny ranch". In addition can have multiple partners in the brothel. Perhaps a porn movie re-creation scene from Fallout 2? The sad thing is, Fallout 2 had more sex in it than 3 does.