The category has been removed for all COD games, as we felt we shouldn't keep track of the multiplayer side of the game
You make some good points, while I personally don't know much about Cinema mode since I have never used it, that could definitely be an issue if true.
And for games with more than one player, while there is always a chance of someone using a menu, and I wouldn't say no to having it so they need to show the screens, but its not always very easy to get everyone's perspective so I am not sure how it could be done properly. the gums are more easily handled, they just need to show the lobby before the game, or after so we can see what gums they have on.
I don't think it fits on this page personally, it would be more suited for category extensions I'd say.