Interesting idea.
Nice pick of characters and a lot of potential since you are using the 3D models publicy available for 3D smut (so, I guess we will end up with chars like Lara Croft, Widowmaker, Mei, Phara, etc added to the game). The game can develop into some kind of 3D SuperDeepThroat.
Wonky ass controls. Being able to rotate the camera is nice, but being able to move it helps a whole lot when posing the chars and to see the action from different angles. (IE: Honey Select's camera movement). It also needs a reset button and a POV button, the second one is pretty much mandatory for this kind of games. If I have to spend a lot of time tryng to adjust the camera to my liking Ill just as much open Blender/SFM and make 3D smut again (and we know how time consuming that shit can be)
While the female characters looking at the camera is a nice touch, we also need the option to make her look at the male char since moving the camera in certain ways make her eyes go blank.
The game needs a lot of polishing but I firmly belive it can turn out great with enough work.