As mentioned, we can't really judge now, but I think many will want one 3 years from now. Halo 3 was a memorable game, but it doesn't feel like I haven't played it long ago and want to play it again. I may change my mind 3 years from now though. It may depend on what the gamers want. Halo 2: Anniversary is a highly requested game and 343 have listened to us and may be making one. At the moment it feels like Halo 2 has more of a reason to comeback. It had many features that have not yet returned or may never return. I would love to experience them again and I'm sure many others will. They can improve on Halo 3 so an Anniversary version can be made with good reason. Until then I guess we can just wait.