Heck, they already made a Halo RTS. Why not a Halo RPG, Final Fantasy style?
While this video isn’t terribly original, it’s pretty well done and mildly entertaining. A bit too long though. The trick to a good short is knowing when to stop the joke, and these guys kind of went overboard. All in all, it’s worth a watch.
[youtube]http://www.youtube.com/watch?v=_CtNE0qjSDU[/youtube]