Ah... Weclock, you're not too good at explaining ;-p
Well, there are lots of things to know about Onslaught and even more about Warfare, that help you play better and also enjoy it more.
Also, my point still stands. There are tons of maps out there, by some very talented people. Try downloading some.
Of course, online, everyone seems to be playing Torlan all the time. Why they do this is beyond me. I've never been overly fond of that map. Certainly not enough to play nothing else for any amount of time.

I have, it's quite nice, I do enjoy Onslaught games as well, it's just sometimes it feels more like I'm in a brown field simulator than an FPS.

Hehe, well all I can say (again) is that you're playing the wrong maps, then ;-)
If you want a truly unique Onslaught/Warfare experience, try the map called SPAMBOX. It's a whole different game, just by the map design alone. It boosts your adrenaline way up, and it's funny as hell.
ONS-Spambox
WAR-Spambox

Hah, I'm glad you say that.
I bought UT3 on steam a while ago because I had a blast playing it at a LAN party once... but I failed to realize how craptastic my PC is.
I was a fan of the UT2004 demo for the longest time but never actually bought it until now.