My initial thoughts:
I like most of the maps with the exception of Plaza. They are about as varied as any in the series which helps promote build diversity.
Recoil, or the lack thereof, is absurd - I've died a lot more from noobs than any shooter I've ever played - some SMJs (like the PDW) are unstoppable at close to medium range
Re-spawn points are as lame as they were in BO I and can lead to serious deathstreaks
Pick 10 system is awesome
Coordinated teamwork is still difficult to pull off, for those of you that played MoH Warfighter - I thought the fire team concept was an fantastic idea and I wish the CoD guys would implement there own version of it. Basically the ability to track a teammate through walls.