1. Shower/grower slider in character creation. Determines size of flaccid PP.
2. a new penis model with physics. You can get away with more detailed meshes, as there is never going to be more than 4 charactes on screen.
3. More traits/skills/fetishes that alter damage given/taken. Part sensitivity doesn't seem to have much effect (it should affect arousal weather giving or taking). For example giving/taking oral. Submissive/dominant,etc..