So the tank driver has to put on a headset mid-engagement?
Seems to induce motion sickness - quite possibly due to the lag and the lack of proper 6DoF tracking in the OR.
Lack of resolution a problem at distances.
All problems that would be sorted by using an optical head tracker instead?
They already wear head-gear, no problem adding tracking dots or IR sources to their helmets.
Would give full 6DoF with much lower latency.
Could use whatever screen you wanted, resolution would not be a problem.
But fine, go ahead and use the tech owned by a US megacorp who are probably not in bed with the NSA, I am sure that is way smarter than just using a couple of IR LEDs, an IR camera, a bit of open source software and a screen of your choosing.