Halo CE was basically the story of human survivors from Reach, discovering something huge. I doubt they had every weapon the UNSC had on them. Although I agree that there are more important things to talk about (I'm actually glad the DMR is back), your post that the Halo Reach DMR being a prototype was VERY wrong. It was a finished product. The Halo 4 DMR is just an improvement. And I THINK, I am not sure, that Chief's "new" armour is Mark VI. It looks different because of artistic license. 343 didn't want to totally rip off Bungie (which in the case of Chief's armour I think they should have). Cortana claims to have done some "software upgrades" but that cannot change the outward appearance of the armour...