I'll buy it and love it as long as 3arch doesn't make it. Not a fan of everyone having commando and a panic knife. Seriously how hard is it to make the knife a separate weapon or a tactical weapon like in MW2? I love being a runner/knifer in the game, but the panic/commando just ruins it completely. Also the tommahawk, the crap needs to be auto pick up when you run near it/over it. I'm tired of playing hide and seek with it when I throw it and miss, and I end up getting killed because someone spawns behind me and blows me away while my head is down looking for my equipment. Finally, more guns that are actually useful. Seriously, MW2 had some many guns that were actually playable and you could go around and get a decent kill streak. Black Ops, there are only a handful of guns that are actually viable.
PC specific complaints, why is there no high roller? There is little point in wager matches when you can earn more money from playing a quick team death match.
Kind of on the fence about matchmaking vs dedicated servers. It is very hard to find servers that play the new maps, or to find servers without silly rules like crouch only, no X weapon etc. And it's like oh great I joined a server, my loadout has this weapon or this equiptment, I can't change it now and if I leave it is a loss for me.