I disagree. Each MW campaign is broken down into acts that could easily be distributed digitally. It could almost become episodic content/missions.
I guess I am kind of sick the unbelievable MP-focus of FPS games now. The original Half-Life is probably as long as Mass Effect 2. Now we have games like Homefront, with a 5-hour campaign.
And the MP doesn't even change that much. The differences between MW1 and MW2 are maps, weapon/skins, and they changed up some of the killstreak dynamics. But that's really about it. Even the subtle changes to the engine could probably be downloaded.
I know COD is COD, and I can't change that. I guess I just long for the era when you actually explored during SP campaigns, and everything wasn't completely scripted, guided, or a QTE. I really don't need to be told press the button every single time I bring up a sniper scope or want to jump an obstacle. Black Ops' campaign was insulting in how much it babies you and holds your hand.
I'm excited for MW3 because I actually do follow the stories. I liked that Soap, the faceless SOB from MW1, was your CO in MW2. I was stoked when Price reappeared. I like it when developers create characters, maintain continuity, build their worlds. But I sadly know the SP campaign in MW3 will be short, excessive, and linear. The AI will be stupid, spam endless waves of fodder at you, and force you to progress as quickly as possible. And MP will be more of the same, and everyone will pay $15 for 4 new maps, and two of those will be maps from either MW1 or MW2.
I'll still enjoy it for the superb mechanics. I just long for a little bit more than online MP 3.0.