As much as I ***WANT*** Bungie to try something new, I just don't see it happening. They have had the opportunity before to move along and yet didn't. There is waaaaay to much money to be made by them to totally give up on Halo. And to be honest, they would be foolish to completely step aside. Esp.l.. considering Microsoft wants them to continue.
What I see happening is this:
Bungie will split up some of their work and probably make a few smaller games but continue with their main efforts on another Halo game. If the smaller games are a success then we may see them move away from the Halo verse to some degree.
Halo is Bungie's baby, while the baby may grow up and do other things. Bungie will always continue to love and nurture it.
Bungie will always be known for Halo. The company will never have another IP that will be as beloved, well known, or have the sales that Halo has had.
"If you've got them by the balls their hearts and minds will follow."
Quote by- The Imortal John Wayne, the original BADASS!
