I really like the concept of loosing control of the aircraft when blacking out, however I think a slight modification should be added.
In the case of LOC (Loss Of Consciousness) due to pilot wound, could we get a gradual control loss instead of instant?
I had pilot wounded last night and was heading in for a landing. I had my P-51D all trimmed out for level flight and was on a nice gentle glide-slope to the runway. Just when I decided to make a slight nose down correction my pilot decides to go into blackout (shaking head and tunnel vision started). I tried to make an adjustment to bring the nose level again, but had zero response. Of course I woke up 5 seconds later, but it was too late to do anything but crash.
In a situation like that, I would think a pilot would have better awareness of his physical condition and would be able to sense when he might blackout. So, what I'm asking for to simulate this is a gradual control loss instead of instant, so a pliot can adjust to it to try and have the plane in corrected flight before total LOC.
Perhaps something as simple as a stick box (similar to what you see when you calibrate the joystick) to show how much your stick is moving realative to the input you are trying to give it.
When you are fully consciousness, moving your joystick 100% makes the cross-hair in the stickbox move 100%, then, as you begin to black out, the cross-hair movement becomes less for the same movement of the joystick. Then you would know you are getting weaker and could compenstate.
I think the same type of thing could be used to simulate pilot fatigue. The more you pulled high G turns, the less response you would get on the stick-box, simulating tired arms, etc. This of course would go back to normal so long as the pilot is given a chance to rest a moment.