What attracts me most to the world of 3D-rendered VR porn is the potential for playing out fantasies that are impossible in the real world. The biggest one that I think FemDomination can capitalize on is body modification.
1. Penis size
2. Scrotum size
3. Breast growth
4. Full m/f transformation
I would prefer to see these kinds of things as part of an experience, but being able to adjust your body before heading in would be a step in the right direction.