If the dev's keep missing what players want and keep doing their own thing, yeah the game is dead. More options in the game, larger maps, there are a number of things they could do to improve.
I don't think COD will die. I'm still playing cod and i've been playing it for many years. My favorite cod is black ops 2 and black ops 3 (Custom zombies) There's still players that is playing black ops 2 and black ops 3.