you could do alot with this game
id play into the domination factor having a domination gage that is always shown with each action either lowering or increasing you bar
also adding a fetishes system would be smart for the player your actions could log what your into meaning enemys that respect you but hate you will choose your fetishes but enemys that just out right hate your guts would play into your hated fetishes as a sorta punishment
the kinder you are the more likely a slaver might like you but also risks bandits taking advantage of you if your a sub
but kindness as a dom could gain you favor with a empire near by and even gain you the rights to breed their queen or their king
you could also make males more rare to make males a high ranking product meaning that you could have the queen and her futa and a male servant she has fun with from time to time
maybe the males all turned into zeds and now the ladys protect any new ones
i know im just going off but its to give you an idea
but honestly just use your imagianation i love playing all sorts of games from lewd to normal tho most lewd games end up sub par or only about the sexy times truely sad