If you check out the latest Bungie Weekly Update (I link to the b.org copy as it loads so clean and fast) you'll find an interesting tidbit that may spell doom to future 'prizes' in the next Bungie game.
Noguchi has been "making a pony." Since he always speaks in metaphor I was annoyed, until he explained that he literally called a new tool/command, xsync-pony - which basically speeds up the "propping" of a build of the game to a clean Xbox 360 devkit, by eliminating code and objects that you do not need to run the current build. Which saves artists and designers a heck of a lot of time.
If you are a long time Bungie fan, you know that a common happening in our community occurs soon after Bungie releases a game... someone figures out how to hack the code in the game to see all the innards... and Bungie has a rep for leaving loose strands of code, graphics, models, maps, etc., that when discovered by us lowly fans reveals quite a bit about how the game came to fruition... what was tried and what wasn't tried, etc.
But now Noguchi's evil contraption may change all that. It seems that with just a flip of the switch, a game can be 'purged' of all older assets that are not used in the current build of the game. Great for them, but not fair to us!
Nothing's definitive though so we'll have to see how it all sorts out in the future.