I think it's fairly easy to imagine what that would be like, given the limited examples you can see with a VR headset with pass-through. It could be pretty sweet for people to have the option of a digital overlay on reality that's under their own control.

What's missing are the extremely powerful but also extremely miniaturized and efficient hardware (imagine just constant inside-out tracking of some kind with the storage to remember the 3D layout of basically everywhere you go, but also with 12-24 hour battery life and not generating a noticeable amount of heat with a tiny surface area), and the open technologies and/or lack of enshittification. Who is going to sell such a device but won't stuff it with ads, surveillance, and paywalls?

The closest we've seen is Apple's headset that was still just a high end VR headset with passthrough and was thousands of dollars while still being locked down.