what kind of VR set do you need?
Anything that is compatible with SteamVR should work (so, most of them). There isn't a standalone Quest/APK version though, you do have to run it on a PC.
I think the reason it can seem clunky in Desktop mode is because it is an orbital view with a hidden point that you change by left click, while you control the orbit with right click. A good fix I think is the ability to show the point the camera is orbiting in while left-click is held down. Other nice to haves could be keyboard control and a freecam mode for people that have trouble with orbital.
Those sound like good upgrades. Free cam during sex positions has also been suggested before, I just haven't gotten around to it quite yet.
Could you elaborate on the world expansion card? Are you adding an outside to the barn? Will there be other locations with separate functionality or is it just for the change of scenery and a place to ride the drake in/on?
Here's an early WIP of the expanded environment that I had posted in my Discord:
In addition to the stable currently in the game, there will be a farmhouse for some other interior-environment scenes, and a handful of outdoor points of interest scattered around.