Wow, just wow. Maybe you just have good karma or something and just consistently run into a lot less douchebags, but I have played a ton of Merc TDM and all I see is ghost. Regular TDM isn't as bad, but there is still tons of camping there too. I had to switch to ground war because 6 v 6 has become so boring in this game.
WaW has the "War" game mode which is great, but aside from that, the game didn't do much for me. At least they had the good sense to incorporate flak jacket against explosives in this game, but they also made second chance/last stand even worse with the ability to revive. I'd also like to throw in an honorable mention for the MP40. It's a good thing that gun isn't overpowered when combined with Juggernaut or anything. It is completely balanced in every way.
I guess we'll have to agree to disagree. MW3 has huge competition this year (Gears 3/BF3) with dedicated servers on the consoles. With so many of the IW people leaving and Activision bringing new people in, I think people are completely justified in their skepticism towards this upcoming game. I love the COD engine and I think they did the smart thing with this franchise by lowering the resolution to maintain the high framerate. I think that approach takes advantage of these current consoles in the best way for a shooter. It's really hard to compete with the fluid controls of a 60 fps shooter if your game is running at 30fps. The difference is very obvious, which is why I always prefer COD. However, I am getting really sick of peer to peer connections. They are going to have to step it up at a certain point. With so much competition out there, you cannot stay on top for long if you keep doing the same thing.