I understand the the Oculus Rift is far off from mass production, but with the hardware really picking up steam (pun not intended) in the gaming industry, I think that its integration into ARMA3 would serve a benefit for both Bohemia Interactive and the OR creators.
Of course, support could be modded in, but native support would be even better. It would definitely add to the immersion factor that the BI aims for, as well as enable both-eyes-open sighting.
Just a thought! I've often used FaceTrackNoIR, and it would be great to see that tech taken to the next level!
Oculus Rift website: http://www.oculusvr.com/
EDIT: Edited to better reflect the changes in the VR space since the creation of this ticket. Thanks to Koala for pointing that out. {F18278} {F18279} {F18280} {F18281}