Had an idea, perhaps more of an easter egg in scope, but itd be hilarious.
Have an invisible XP threshold somewhere above 4 (perhaps only if youve got lvl 4 for all 3 skills) where once you have reached it, you go berserk.
Going berserk would get you, for its duration, unlimited endurance bar, super fast regeneration of health and the ability to pickup and use any weapon. Perhaps have berserker only last 90 seconds, but it also would launch a script where you run around laughing maniacaly mowing people down and spamming abusive messages to your vanquished foes.
Have to say I love this game, its absolutely incredible !! Splash Damage has made a game far better than any retail game out right now. GameSpy stats have had it as #2 most played game for all of this week. Looks like bf1942 and MOH numbers have faded alot since ET went final. CONGRATS SPLASH DAMAGE GUYS, you gods of the mod scene.