Some of the players are upset with fatigue.
While I enjoy all the changes, deeming them good and realistic, some players would prefer to play on lower difficulty with less aggressive fatigue simulation, like it used to be before the big fatigue update.
Adding a selector for fatigue simulation in difficulty settings would satisfy all the nay-sayers and won't hurt anybody by making the game too arcadeish for their taste.
I've done the searching and couldn't find a ticket regarding this suggestion, excuse me if there is one.