I don't really understand. If I need to do something quickly while I game in vr, I just lift the headset up to my forehead, which only takes a second. I've used the passthrough for finding my controllers and painting my playspace.
Only game I'm interested in where I see value in passthrough would be Thrill of the Fight 2, just because I want to be even more sure I'm not going to punch something hard or valuable before throwing hands, and a better passthrough would definitely be worth it for the comfort if I'm ever going to use it for more than a minute at a time.
3d Gaussian photography looks neat though.