I made my stick setup about 4 days After IL2 was released. The panning was too slow at first, and at the same time not "what flexible enough to allow for a rapid, yet COMPLETE visual scan across the entire 2 axis of view.
There was NO such thing as a cougar, nor hazard script, or the like then.

The most realistic view system will be one that places you in the center of your seat(IL2) that moves with a mouse function (IL2) at a rate that is just a bit slower then (Aces High), but as you start your Turn to LOOK behind, above, etc... the relative position in the X and Y axis will SHIFT to their respective sides of which the intended viewing angle was sought.
For point of reference for those that may not follow: The Z axis would be in this case the plane that runs from the Nose to tail, essentially the Straight ahead/straight Back view.