It would be really great if  X-Plane 11 allowed users to directly bind joystick axis to "head look", e.g look up/down  and look left/right.  
That would allow pilots to use EDTracker without the need to run opentrack as a 'go between'. Opentrack is free and uses virtually zero resources so it's not a showstopper  but seems like a 'quick win'  to allow direct binding.
[Edited]
X-Plane 10 allowed directing binding in this way
