I popped this game back in yesterday, yes I was that bored, and played a round of Zombies. Not nearly as bad as I remember it being but still a pain in the ass. Atleast I was playing with one person who knew what he was doing as the other two bailed out after five or so rounds. I'm probably gonna stick to the Spec Ops in MW3 for now, as I never did any of them.
I no longer have a 360. But I still plan on playing GFWL titles. So I'll probably stick around.