A few more thoughts...
-The Spec ops survival mode is excellent. You have to put in a little bit of time before you unlock enough stuff to get a real good run going, but once you do, it's a whole lot of fun. Maybe not quite as good as 3arc's Zombie mode, but pretty damn good.
-I couldn't be more disappointed with the fact that IW decided not to include ANY objective based gametypes for Hardcore. HC Domination is in there, but I don't really even really consider that an objective mode since 95% of people just play it as TD. A little HC HQ or HC CTF would have been awesome.
-If you can't stand the camping that typically comes with playing TD, give Kill confirmed a shot. Pretty fun, and since the only way to score points for your team is to pick up the dead opponents dogtags, camping is kept to a minimum.
-Why IW continues to make games where you can quickscope with a sniper rifle blows my mind. The fact that a sniper can be just as effective as an SMG or shotgun at close and medium range is a stupid an indefensible decision by the developers.
-We're now almost 2 days past the launch and I still have yet to be able to sign into COD Elite. I'm not real sure how they were caught off guard by having a lot of traffic on the service on launch day.