So I was Googling for some reference images of Tiberium and I ran across this Deathmatch map for UT3. Surprised I hadn't heard of it before.
http://utforums.epicgames.com/showthread.php?t=601619
I tried it out and I must say that I like it. It is pretty fun, it has great atmosphere, has a great flow, plenty of open space and closed space, good weapon/health/powerup placements, and of course it doesn't hurt that it's based on Tiberium canon/lore and has "What Lurks" from Tiberian Sun playing as the map music.