this may or may not be possible...
in AH right now, say you are in the cockpit and are looking left while you drop flaps. the sound only comes out 1 side basically. same with a few other sounds, and especially when in a field gun or something and move the aim.
it is not really annoying, but somewhat in certain circumstances.
would it be possible to make those "own FE" sounds not space related? it is my guess there is a "point in space" in the AH world that sound is originating, and by moving your view or relative position the sound moves according. it works GREAT for other things, especially external sounds, but for those local sounds it shouldn't really happen.
in a field gun, moving around, the sound would be just as loud in both ears no matter where you pointed the gun at.
flaps, I don't know if they are sent to external users, but I doubt you would hear the flaps of another plane deploying over the engine noise even if they were right next to you on the runway. for sounds like that would it be hard to make them "mono" on your own FE?