Oh yes it would be great, and I agree it doesn’t sound impossible. But…
I think you do have to do some work to let you walk around in the square room and have it look and feel right. Movement, collision, animation, scripting, etc. All stuff that’s been done a million times before in other games, including even Frontier games (Planet Coaster, Jurassic World). But the work still takes some time, effort, manpower.
So say you do the work and set up the stuff you said – which don’t get me wrong, I want that stuff. But you do it and then people say, “Great, now I have a more immersive, slower, clunkier, replacement for a couple of menus. What I could have done in the Station Services or Chat windows with a couple of clicks and keypresses, now I have to walk over there and wait for the vendor’s animation to finish before the thing happens.”
And then people just go back to using the menus because it’s faster, and the telemetry guys say “huh, no one’s using this expensive new feature, guess they weren’t interested in it after all”.
So my long winded story means, I think they need to introduce Space Legs with compelling gameplay that enhances the game and inherently needs Space Legs to do it. And until they have that, don’t release any of it, or it will fail and be abandoned.
Also if you give a mouse a cookie, he’ll ask you for a glass of milk!