I meant new game-type as in, something that isn't a realistic FPS themed around counter-terrorism.
CS is popular for a lot of reasons, but all of the big ones come from its unrealistic traits. The gameplay is fast, the maps are small, the objectives are barely ever carried out and strategy is next to nil.
My opinion probably means little to you, though. I don't really like this realism fad and want the rocket launchers, multi-hit kills, missile dodging and circle strafing days to loop back round into popularity again. I find realistic action to be unsatisfying and often feel I was killed more by the random seed rather than the player having a Superior level of skill to mine. It irritates and I shake my fist in a threatening way at the computer.
I'm not saying it's impossible to pull off, nor that you could not do it. It's just not my cup of tea right now. Give those Counter-Terrorists concussion grenades so they can launch themselves across courtyards and I'll be happy, but chances are that'll spoil the realism.