Think about it. Maybe Halo has just run its course. Halo 1-3 established an amazing trilogy for the record books, adding changes and dramatic overhauls in it's game engine, yet making the game familiar and enjoyable. Halo 3:ODST gave a worthwhile spin-off, elaborating more on the other spectrum of the Halo universe. And ending with Halo:Reach, giving the trilogy closure, and giving the fans a new hero, while offering another multi-player experience that I found enjoyable. Rehashing an retired franchise because of money, and not passion meant changes like killstreaks, and create-a-class were going to happen. It was inevitable. In my mind, the Chief is chilling in his cyro tube with his soulmate. But 343i can keep making their version if they choose.