A big issue on other headsets is the hedsets inertial tracking when it is used on airplanes or cars. The entire envoriment is moving at high speed and the inertial measurement unit in the headset tracks movements based on acceleration and deceleration.

Small changes in the aircrafts speed in various axes tend to cause tracking issues.

I guess this could be fixed with a higher reliance on camera traking, but i think it is still a unsolved problem.