I don't think it would be possible to get the Kinect working with a PC game for any reason, it's an xbox peripheral coded for the xbox to work with games programmed to use it and the xobx. But there is a peripheral already built for that purpose, works better than the kinect ever could, and works with arma 2 already so it wil work for arma 3 if it doesn't already. It's called TrackIR by Natural point.

This feature is in no way urgent.

It could probably be possible to do something like that since the Kinect has a PC SDK, however this kind of feature would require a lot of work and is not the kind of thing you ask at the alpha stage. I also have doubts about the results you could get with a kinect, the device is made to work at greater distances than the one of a user in front of his PC (typically 1m-10m instead of the 30cm-1m you would get on a PC). Specific devices are being developped for this usage like LeapMotion.

The idea is good but it's more of a hack than a feature that needs to be implemented, it could however be implemented as a mod and i'd love to try it.

I am using FreeTrackNoir with my webcam, and it works ok. Why would you need a kinect interface, when arma already provides support for TrackIR and FreeTrackNoir??
Doesn't make any sense.

http://facetracknoir.sourceforge.net/home/default.htm

by the way, I have a feeling that freetrack works a lot better with arma 3 than it did with arma 2. Maybe it is because of some FreeTrack update, I don't know.

Mass closing ancient tickets with no activity for > 12 months; assume fixed or too trivial.

If this issue is still relevant in current dev build, please re-post.