The only major problem with the game is the serious connection issues (on the PS3 anyway). There doesn't seem to be any rhyme or reason to it. The worst is when you make it all the way through a long game then it suddenly boots you in the last minute. It has also caused my machine to freeze several times, something I've never had happen even once with any other games.
Other than that, I'm very happy with it. The chopper gunners and gun ships are really annoying though. It tells me with ghost pro they can't see me, but I still get killed over and over when those are in the air. Luckily, people don't get them too often. The only other thing that bugs me is when I wind up in a game against an organized group of friends. It winds up being impossible to even move. But hey, that kind of stuff happens.
Nuke Town is great. I watched a teammate put up 154 kills there one match. He got a chopper gunner and then went to town. The other team was ridiculously bad because even with those 154 kills, I also managed to put up the most kills I ever had in a game, 50-something.
I almost want to try to go 0-0 on that map. I've found a pretty good low traffic hiding spot.