I've been thinking on getting this game, but solely for single player experience like I have gotten all the previous ones. For some reason I almost never play any shooter online where the multiplayer is kinda bonus when the campaign has been played through. And it's sad that now you can't release a good shooter without having the obligatory "MULTIPLAYER" component in it. It makes me feel a sick at reading the back-covers hyping the innovative and having thousand unique weapons.
I think that an excellent game stands on it's own without a need for adding the MP. Like Half-life series.