I'll look up add them back in for sure. Menu option sounds like a go. The plan was to have more than just one door open, but level building is definitely not my strong suit - it was just taking too long.
Not sure it would have the quality for VR. I also struggled to get spatial audio working well in unity. But certainly will consider it!
As for input options - definitely.
Thanks for giving it a go! Once I'm setup, I'll give yours a go also.