I don't have a problem with campers. I tend to move around an map slowly and some people have called me a camper for just not taking risks and running out in the open when I know that the opposition is about to run right into my room where I can kill them instead, and then I move on. Just because I was prepared doesn't make me a person who's playing the game wrong.
I saw a mod for CoD 2 which would show people on the map as if they'd fired a gun (no UAV's back then) if they stayed in one place for too long. Seems like a good idea if you think running around constantly and bunny hopping better than the opposition makes for a better game.