When you stick your head out the side of an open cockpit aircraft in VR, there should be a loud wind sound effect (like X-Plane already has.)
I’ve flown cubs and biplanes in real life and occasionally have needed to move my head outside the cockpit slipstream to get a better view. The wind is very loud / howling bc of the added drag when I do.
This would add another level of immersion to an already extraordinary VR experience.