Regarding the status update, I think the larger range of about 10 would be best. Not because it makes it easier, but I'm imagining that the dialog would change with each level. If a session could/would last for 30 minutes or an hour, it would be nice to have more range of stimuli beyond just getting started, excited, and almost there.
With a simple two-button input to increase or decrease, it can be changed easily. If the domina provided audible feedback, it's easy to know that the game knows where you are "at". The domina could even reward or punish based on that feedback.
Another thing I'd like to see that would take two buttons is the ability to move things along......or not. The domina could provide audible feedback when you press a button. She can either tell you what she wants to do, or tell you what she is going to do to you. This action can be used in a submissive mode, ie. she tells you what is going to happen, but you have no choice, it's gonna happen. Or it can be a bit more player focused so you can spend more time on specific activities you enjoy most. The second (4th total) button could be used to prompt her to suggest another activity (only active in non-submissive mode.) These voice prompts should occur before the animation cut by 5 or 10 seconds. She tells you what she's about to do while still doing the current action. This will be more natural, talking about doing something before doing it. It will also create a natural delay for player feedback if it is something you don't want (in non-submissive mode.)
I'd like to see support for vStroker. I don't own one, so I can't comment on how well they work, or how accurate they would be. That said, I know the plan is for something more "hands free" and synced with the animation. I'd probably prefer "hands on" and synced with animation. Controlling the animation speed via feedback would be very cool (if feasible.) If it measured top of stroke versus bottom, better yet. While this game is Femdom, your audience falls well beyond 100% submissive. Being in control of the pace is a big deal sometimes. Additionally there are millions of Fleshlights out there. You could drive some serious interest by just bringing something new to that arena. Existing fleshlight/Oculus owners could get into the "interactive" game for the price of the vStroker, which is SO MUCH cheaper than the anticipated device.