If IL-2 is to have any claim to being realistic then movement must be introduced to the virtual pilot's head.   Look at these screen-shots  -           In the first screenshot the aircraft is recovering from a dive at appx. 5G. In the second the aircraft is violently nosing over (bunting) appx. negative 3G. In the third screenshot the aircraft is snap-rolling as fast as possible to the right. In the last picture the aircraft is in an ap