As a Pure Mage, I hated how Fatigue effects our spells, and since I am Dungeons & Dragons Tabletop fan, I found Fatigue very annoying. Because of spell chance, and only what should affect it is spell dice chance, not fatigue lol...

I edited Movement and Fatigue Settings Tweaked mod by nelxxz, and added Tireless Attack(FatigueForVR) mod by budric.

Tireless Swimming, Jumping and Running... Sneaking will only take 1 Fatigue when You move, and when You release, it will get max Fatigue. so You can tirelessly use it. (nothing to serious)

Just Unzip this two files into your Morrowind's Data Folder.

Hope You enjoy!