Well, firstly, http://www.planofattackgame.com sounds like fun, and I'll probably d/l and try it soon. It's an extremely tactics-based mod, although it might be a bit too much like BF2/CSS.
Secondly, http://www.insectsinfestation.com/ seems like a great game, and I'll be d/ling that as well soon. Playing as an insect would be interesting, and it's had a good review from PCZone. It's apparently quite a complex game.
Finally, //www.pvkii.com is a brilliantly fun game. However, it's currently in Beta version and for now is just random hacking and slashing. But when it goes gold, it promises to be much more team-based.
I had a quick look at them all.
The insect thing looks ok, I tryed to D/l it, but only got the patch.
So, I gave up.
And remember I tryed to D/led the Viking thing, got to 99% and closed it by accident... I gave up after that..
And the top one, honestly, doesn't look that good, I'd much rather buy BF2/Css/BF2142.