Im not to sure if this has been discussed but, I think that to optimize the amount of sweet stuff in HALO 3 there should be two seperate discs. A Halo 3 campaigne disc and a seperate multiplayer one.
Just my thoughts...
-
Two discs: PROOF http://www.computerandvideogames.com/article.php?id=165578 In the pic, there are game discs 1 and 2, and then bonus features (3)