@PhatSeeJay: I have a feeling we're going to get something like that out of the next ME game.
@HistoryInRust: oh, totally. The MP was a daily addiction for me, and doing the Operation challenges were a blast. I don't regret a minute (or dollar) I spent on it.
What I would really love is a new game set in the ME universe that is MP focused, but not deathmatch based.
Something with the same social challenges, score chase, and reliance on team work, but with bigger maps, better objectives, and a broader range of enemy types.
Something that's a cross between Syndicate's co-op missions and the Spartan Ops in Halo 4, maybe?