I started this long subjects long ago and created the first mod about head position. head position has nothing to do with FOV, you should be able to get your favorite FOV but the point of origin of the eyes head position is a must and should be as realistic as possible. Pete did a great work and approaching a great result. Still slightly off because of using a misplaced point of origin.
At the time I ask DCS to use a correct point of origin and send it to the 3D designer to create the 3D cockpit in relation of the correct seating position... Nope.
IMO the sight should have different settings, game like we do have in the original DCS and realistic. Now using the VR glasses you will understand very fast that having 1:1 view and correct head position is one most importance.
Like in IL2 the head position was set in the 3D model itself to fix this I had to correct the sight position from the 3D model it self. for example All my DCS/IL2/ IL2BoS/RoF/FSX do have a correct position and it so much more enjoyable and realistic.
The neck in DCS is a great addition.. Fantastic I would say. :) I do have a big experience in aircraft in RL and this original sight disturbed me since day 1.
I collaboration should be great on that matter to obtain a sim with a most realistic views.