First of all I hope 343 sees this but I do not post this on 343s forum because a big part of the community over there are newbies, in fact I only think there is like ten or less halo veterans in there.
I know many halo fans did not like that 343 changed master chiefs armor in the game, so I came up with an idea:
What if the player where able to change the look on chiefs new armor and make it look like one of the past armors he wearied if they wanted, in that way nobody would dislike his armor.
Remember that chiefs armor represent he whole halo franchise so it is very important that it is good looking.