Okay, here's a thought. Perhaps rather trivial, but great for immersion
Will the position of your head as determined by a TrackIR device with 6DOF also be used in the Damage Model calculations? (preferably optional because of obvious advantages to non TrackIR users)
I was reading "The Big Show" by Pierre Clostermann and he describes that whenever he was attacking (ground) targets he would lower his head and basically creep behind the engine/armour plating . With 6DOF you can do the same. It would be nice to know it would actually help in the game