The spawns still need work, no doubt, but have gotten better recently (or maybe I'm just having a real lucky streak, I don't know.)
As far as running and gunning, well, the maps are bigger so there are more places for people to hide and camp. However, I've found as time goes on more and more of the maps are becoming 'running' maps for me. Not all, of course, but there are more than just a few now.
I think in time there will be more people playing with the run and gun style and less campers. Oh, and if you haven't given it a whirl yet you should try the K7 with rapid fire. It's a nice little run and gunner.