Thank you SLR for listening to feedback. My recommendation is to have some sort of grab bar rig that the performers can grab on to which is positioned adjacent to or behind the camera. This can make it look like they are grabbing the viewers shoulders, face or a natural prop like a chair backrest or headboard behind/above the viewer. It will allow for better mobility and support for them to really focus on the acting and focusing on user interaction (eye contact, etc.) without thinking of their balance too much.
The foreplay/striptease/posing is definitely the best feature of PT. The AR components also help like props for a strip club or massage table or some bondage device.
The big challenge of PT is lighting and positioning for the viewer. Being able to structure the story line to bring the experience to the viewers home would do the trick, otherwise rely on AR with CGI.
Another good feature to have on the PT is to inform the viewer of viewing angles like you mentioned in the post. Recommended for sitting, standing, laying. Also the room lighting. Another would be viewer activity if you want the viewer to actively interact or passively watching and getting pleased by the performer.
One idea for an active scene would be like fingering or some form of mixed JOI. All viewers have a bed or couch and you can easily put a performer there. Invite the viewer to be part of the action this will increase the interaction and immersion of the scene.