Hmm... while I'm a little on the fence about the fatigue thing, I do have a suggestion that will make that addone less of a stat thing and more to do with the physical gameplay. With JKIIMP, I never liked how the players had ultimate Robotron abilities. What I mean is.. they can go from rest to sprint in an instant, as well as suddenly sprint in an entirely different direction. It sounds like the fatigue thing is staying in your mod.. so perhaps you can make it so fatigue is used when running back and forth in zany directions that are too impossible for the human body. Just a suggestion, but I think it'll be a good incentive to get players to slow down in duels, and not be so berserker with their sabers.
So it goes.