I evaluate online multiplayer on a game-per-game basis. Online multiplayer isn't just something that should be thrown in to artificially lengthen the life of the game. In fact, it needs to be more fine-tuned and glitch free than most single player games, imo. If I'm playing your standard shooter and there's a huge misbalance in weapons, or level balance, or lag's a constant problem, or ridiculous amounts of glitches/exploits are being used, it's an instant deal breaker for me.

As for other things discussed: I prefer co-op multiplayer over competitive (though competitive co-op is sometimes a fun twist), and I think MAG looks brilliant. Though it doesn't offer you escapism by giving you super powers, it still gives you the ability to become a soldier, and participate in a large battle. I'm, in a way, kind of a military nut, so I appreciate that brand of gameplay.