Fatigue ingame..

[Shadow]

Online D/F server: Not a chance. This bunch of yahoos are, for the most part, Airquake fighters that want less not more realism. Check H/L and see how populated the arcade servers are compared to the higher difficulty ones. It's all about the action, stats, and bragging rights. Why muck it up with an attempt to fly realistically.

Online Coops: Good to have as an option as some these pilots tend to play IL2 as a sim and not an arcade shoot 'em up. Still hard to implement realistically as the game resets between missions.

Offline & Online Campaigns: Definitely! Here is where you can improve your ability to sustain higher G's as you gain more stick time. Or become fatigued faster when flying your fourth mission in a row. When the game can track your progress, it's more likely to implement the effects of fatigue in a more realistic way.