I don't think it'd be too late to do a movie on the fall of reach, because the game just came out and almost nothing at all that happens in the book has anything to do with the story of the game.
[citation][nom]AlexTheBlue[/nom]Ah, but the Niven ring was itself influenced by Dyson's concepts, who in turn was influenced by Stapledon's Star Maker. Might want to keep that in mind before you run your mouth.[/citation]
Not only that, but there being the halo's themselves is just a convenient thing to use for that - it isn't the point of the story. It wouldn't have made a bit of difference to the overall story if they were borg cubes instead, Cube just isn't as cool a name as Halo.