Pretty sure halo 4 was a success, no matter what you say about the gameplay :P Sure, I enjoyed Reach and Halo 3 more, but that doesn't mean Halo 4 wasn't fun, or worthwhile. It's a game. People like it, or they don't, and a lot of people liked it. Also Halo is supposedly going back to a more classic style for Halo 5, if I'm not mistaken (which I could be). Halo is not dead, and won't be for a while.