After encountering Roo in the blackjack area and seeing my character say "Sadly, it looks like there's nothing under her underwear" i.e. no cock, i think it'd be nice to have some way of checking off what your character is or isn't into, and having interactions and combats adjust slightly depending on your choices.
For example you could have a list of options: Cocks, Vaginas, Butts (male) butts (female) hips (small to large) breasts (small to large) etc, as well as just general Sexes (male, herm, female)
and each option has next to it various choices for how into them or not you are. "Really like," "sort of like" "neutral about" "don't like" "really don't like" etc.
in combat this could give you lust resistances appropriate to what you chose. So someone who really likes tits will take extra lust damage from tits, but if they really don't like cocks, then they'll only take minimal lust damage from cocks. They'd still take some of course, but not as much as if they chose a higher attraction.
i'd imagine pheromone and psychic lust damage would be unaffected by these resistances.