In short, DO NOT WANT!
I like the 3 year pattern. With the amount of content stuffed into these games it takes me that long to feel I've finally invested enough into them.
I personally think they should do away with the Halo brand name altogether for future games. I know it's a horrible business move but it's the route I would take if I was in charge (pending comments thanking a higher power that I'm not in charge). I think 343 should do what Bungie has been orchestrating since their inception; providing a new and exciting world that hints at past (and future) events from other franchises. Halo incorporates mythos from ONI, myth and marathon. I'd like 343 to make a fresh new franchise that hints in the same way at Halo. Maybe doing something forerunner based - connecting the Forerunner race to the human race? Or explaining the flood and Forerunner experience? There's a lot of material to work with and it would be a shame if they just went with obvious Chief after Halo 3 arc.
Also by keeping the Halo name 343 will have enormous shoes to fill and regardless of what they put out people will kinda disregard its quality as it's not "a Bungie made Halo" (much like Treyarch with CoD).
