I haven't played much recently, but I play on tactical servers. Not sure which... but I enjoy them a lot more, since it really limits the ability for players to blindly kill you. i.e. they enforce no noobtubes and blind grenades. I can find out the name of the servers tonight, but if you put a search filter on Hardcore: Yes and Friendly Fire: On, you should be able to find a few.

I don't think you get more points for each thing you do.. I.e. you get 10 points for a kill on either hard or easy. Although I'm really not sure. But, on Hardmode you can kill other players much easier (i.e. if you hit somebody once, they die... it doesn't take 20 rounds liek on easy), so its much easier to get kills... meaning more points. You should really look at completing some of the achievements as well... you can get a ton of points for working towards those... Blowing up 5 cars while you are waiting for an enemy can net some good points.

They released a few maps a -long- time ago, not sure if they released anything new since then. Those were Chinatown, Creek, Killhouse, and Broadcast.