did they not have sunglasses in WW2? Ok..prolly not Oakleys....but if HT persists in having the #@@#@ sun BRIGHT and low in the horizon 80% of the time, mebeb they ought model 'shades', that we might map to a key. Even if the sun is behind you, there is a glare on target and instruments that simply makes things absurdly difficult...and NO, adjusting gamma in middle of dogfight, depending on the compass heading of the moment, isn't an option.
Hmm..I wonder if gamma + and - could be set up such that ya could map it to your stick?