Well, it would certainly be a precious dream for many, perhaps for too many, if not however rather obnoxious, as any idea that Bungie could produce would obviously be just a way of elongating the story. Not that I have anything wrong with it, but another major problem relies in the weaponry. I'm only saying this because they've mostly covered all possible aspects of weaponry they can cover. Although knowing Bungie, they'll probably come up with something, like a knife shooting gun. What I'd like to say is that Bungie being a business must always aim for it's own benefit, and since Halo has proven profitable to the legions of fans it has created, they are in the total right to make another sequel, if however they could venture on something new.