I have some suggesstions / wishlist that I'd like to post up though. Many months ago, I mentioned one or two of these before, but after playing the first real cuts of Chaos UT2, a few more have popped up.
1. Fireshield, poison shield, flash-proof goggles. Just to balance out multiplayer a little when some bloke starts dropping napalm all over the map. Make it last a certain amount of time/damage/ etc.
2. Turrets with variable weapon systems. Drop turret, give it a link gun, and it shoots green stuff. Give it a rocket launcher, it shoots rockets, give it a Claw2, and it shoots proxies (shudder), give it a gatling gun, and it shoots bullets... lots of bullets. Basically, have a turret generate with one default weapon, and allow the player to add one more after it generates (this removes the weapon from the player as it's "assimilated"). At a later time, the turret owner can come back and reload it, or replace one of the two weapon systems with another.
3. The Multibarrel Chaos Gun. Pull the trigger, and something shoots out, random each time. Uses ammo from other weapons. Alt-fire shoots a cluster of various ammo at once. Kinda like a D&D Wand of Wonder in a gun.
4. Sword and shield, Two swords, & Two-handed sword melee choices would be cool, though whoever is doing your animations may hurt me for suggesting it.

5. Plasma or Lightning mines. Laser trip mines that are not hampered by distance from the mine itself. Trip the beam and a jet of plasma or lightning bolt zaps out from the mine. No splash damage, but gives the ability to put mines in the darndest places and still make them effective.
Well, that's some 2 cents. Thanks for the great mod! Can't wait to see how the melee stuff comes out!