Hey ! Asking because I don't see it in the kink list, but is there lacation in there ?
Secondly, how about non human mods in the future ? (Demonic aspects, hucow, that sort of stuff). I haven't gone far in the game yet so forgive me if it is inside of it, but how about partial changes in the impulses of characters ? Could be used for things like apetite and libido, but also things like countering depressive thinking parterns and self desctuvive behaviors (drugs, smoking...), could be interesting.
Lactation isn't specifically in the preferences list as I've always seen it as a standard thing that comes with pregnancy. But I'm also aware that some may want it on its own with another included fetish so I might change that at some point.
As for the other changes you mention, some of it is on my mind but I can't promise when I'll be working on that as I fully intend to flesh out the game in its current premise.