The grenade launcher is the one thing I've been missing in UT2K3 and this one fills the void and fits into the current arsenal. Nothing but praise on this one.
The mine launcher. ah, the proxies. They are Chaos for me personally, the rest is bonus. The firemines are cool 2, I was wondering if the ammo should be more limited but I read that the mines are easily destroyed, I still have to see the details but I'll trust you on this one

The Crossbow. Still going strong. Only thing I dislike is the alternative alternate fire, I'll go into this one more with the rocket launcher
Vortex. COOL ('nuff said)
The CUTTER. haven't used it that much but I like the feel. the firespeed makes for a little less spammy tactics. I like it so far
The ERDW. hmmmm........ I can't get excited about this one for some reason. But it's a railgun and I never liked the looks of those. I'll grow to love it eventually.
The Sniper. I'm probably one of the few that understands why the lightning gun was made. I'll get used to it though.
The Chaotic rocket launcher thingy.
You know why I dislike this. Back in UT I could play maps designed for Chaos and get almost everything without the mutator switching with normal UT. Here's hoping for a weapon like the Unreal Mission packs Rocket Launcher which had laserguided for an alternitve fire.
The Armor Shards. I liked the old CUT look better but nothing else I can complain about.
The rest I'll let you know once I try it out.