Ok, I'm going to be honest here. I'm all for programming for fun, to see what sorta things are possible. Can definitely imagine programming for VR is exciting.
That being said, I don't really see what would make me want to use this application. As mentioned, the description is very unclear, and the scope seems very unfocused. Why would I want a physics engine inside my virtual desktop environment? If I wanted to record game sounds, why would I want a virtual desktop application to do it? Why is it designed for Elite Dangerous? What makes it particularly suited to do so?
As you're obviously aware, a number of virtual desktop applications exist, so what do you aim to do differently with yours? I'm not even sure what I'm supposed to do with the virtual desktop that this app provides.