They do, yeah, that system is already built in, although it admittedly doesn't have too profound of an effect right now. The system does have greater flexibility, with characters having a list of preferences (with their own levels of that preference), and ultimately the hope is to make it so that understanding those preferences makes it easier to "pacify" a character in combat, including things like, say, for example, a character who has poisonous sperm enjoying blowjobs, but also having a preference for dirty talk, and being able to get them off the easy and dangerous way, or the clever way. The Fire Elemental is a good example of a character where that kind of dynamic could come into play.
Right now the sex combat is a fun sandbox to play around in. We want to get more nuanced things in there like character mood, tying in attraction, having characters with preferences *want* to, for instance, dominate Hiro, but Hiro being able to, using his statistics and abilities and player knowledge, "tame" them, so to speak, and that's what the various endings system with its submission and dominance outcomes is in place for. But while that stuff is cool, it's just not as high priority right now. We can spend a ton of time making Hiro's interactions with goblins deep and intricate, and we will, but there's just a lot of other stuff to be done first.