I just discovered the site and it sparked some serious fantasizing. Planning on a Vive purchase very soon, after which I'll be purchasing the product. Thought I'd share my hopes for what I might find in the future.
1) Exhibitionism / Humiliation.
VR presents a safe space to explore, so scenes that push the viewer's boundaries could be powerful. For instance, the viewer is on stage for a playful slave-for-a-night auction in front of a dozen or so NPCs. The NPCs come up one at a time to inspect the goods and maybe give a few remarks or commands (see #3 below). Could even tie into other scenes as the auction winner could lead the viewer off to a random scene.
2) Exploration / Ambience
I think you have a little of this already with statues but take it a lot further. Create a super sexy environment for the viewer to just wander around in. For instance, a sex club with a dance floor upstairs and lots of private but intrusion-friendly rooms downstairs with NPCs engaging in different activities. Another, a castle full of nude servants and the occasional human decorations. Probably needs a lot of development time & resources in terms of populating the environment well, but scenes like this could be really interesting. Did you ever play Mass Effect? I carry that Afterlife environment around in my head to this day (alien strip club, essentially).
3) Obedience
It sounds like you might be working on stuff like this for room scale. Commands that have to be obeyed or else the game can't progress. Positions that must be maintained or the game will pause - or other forms of in-game encouragement. For instance, Vive controllers could be observed to ensure that the viewer is keeping their hands in "cuffed" position behind their back while mistress does her thing. Or above head (spread wide or straight up). Or lying on the floor or on all fours.
4) For couples
Wearing the VR helmet and 3d headphones is a little like a blindfold / sensory deprivation, but a lot better. If the viewer has a real-life partner, a great form of play might be having the partner touch and please (or even bind!) the viewer while they are in a scene. It would probably tie in a lot with the ambience idea above. Just place the viewer somewhere sexy and let them feel what their partner wants to do to them. Now every home can have a dungeon... better, one with more naked people in it. Reciprocity is key, so there should be scenes for each partner, perhaps even an enforced or encouraged trading off of who is in and who is out of the virtual world.
Perhaps somehow the one outside the VR world could be clued in as to what might be a good idea to do at a particular time? Maybe on a supplemental monitor or something. Then they could be integrated into a more story-driven scene (and have less of a creative burden).