FG can support headtracking if you do it yourself based on this :-
https://l.facebook.com/l.php?u=https%3A ... _LQu0jUmfM
My question is this - Why not just include those files with FG as standard and include a tick box on the launcher to enable it ?
To me this is a logical thing to do and it would give FG an "out of the box " solution to those who want head tracking.