I can't blame Activision and IW wanting more control over the PC version's multiplayer. It sucks for those used to running and using user-run dedicated servers though. Also, Battle.Net seems to do okay with allowing player mods for the games it services. I don't see why that has to go with IWnet. Oh wait, Activision would rather charge you for those maps and mods.
Anyway, it looks like that terrorist attack at an airport that was teased in the teaser, E3, and Infamy trailers will be a fully player controllable sequence (as an undercover CIA operative). This is a surprise as I thought it would be another cut scene like The Coup.