Wouldn't it be fantastic if these headsets could be made by small local factories using less than $400 of equipment to setup?  We're basically already there - all you need is a cheap 3D printer for the camera holders (in our case an Ender 3) and a cheap A3 laser cutter (in this case an Eleksmaker A3 pro).  As it happens, I just got a laser cutter for "in house" prototyping to speed things up.  I assembled it last night, and now it's time to work on simplifying the design to speed up assembly and reduce dependencies on glue.  Perhaps, given the new camera module we've chosen, it might even be possible to get rid of the 3D printed parts entirely!