After nearly 14 hours of pure multiplayer mayhem I'm quite enjoying it. If they introduce domination from BF3 Close Quarters into this it'll easily be my go to game for the foreseeable future. Most of the levels would work pretty well for it too due to the lack of overpowered vehicles.
Managed to get myself into division 1 for accuracy with everything else slowly improving. I'd be VERY surprised if the following weapons didn't get nerfed in some way:
M416,
M16A3,
K10,
P90
Each of them feels a bit too strong compared to anything else available to the character at the time, which is a bit crap when it comes to balancing. I've used the first two personally and the M416 is insanely accurate, even with full auto. It also starts off with a very nice sight on it which makes headshotting anyone at close and medium ranges absolute childs play. The K10 is more effective than the shotguns at close range which is just wrong in my opinion, especially when most people can still require a follow up shot with the M870 shotgun if you're unlucky, where as the K10 will kill you within half a second easily.
Theres a few levels I've seen gas grenades used to devastating effect but I've not actually used them personally yet. Are any of you guys using them routinely or just on specific modes like blood money?