Looking good so far. A couple of ideas:
Keep starting out as human, but allow changing your race by doing certain things in-game. For example, turning off the "magic phallus" during a scene with Lycandra, which would have a chance to give you lycanthropy. I say a chance, in order to encourage repeating the player's time with her if they so choose.
Add succubus race, which you can become by summoning one, perhaps requiring a specific item gained through a side quest. Again, the change made possible by turning off the "magic phallus" during a scene with her (for example.)
Maybe add some bonus content for taking companions to different regions? Group scenes.
Add different reactions from characters if you're not wearing anything when you talk to them. I noticed you can just not wear anything, and it seems weird that, for example, Ramona wouldn't even acknowledge that during your first conversation. Perhaps allow character to get hard when your just walking around?
Discovered a bug with the "follow" command. Tried going backwards to where you spawn and Ramona wouldn't follow me past a certain point. Had to manually move her.