No exclusive multiplayer stuff, I thought you meant that as well. Reach have many more credits to offline players for forge and customs etc. ( I was getting 12,000 per forge game) and it was good because ultimate could get everything. Then 4 had commendations and ruined it.
Campaign specific (I didn't realise you mean that. Derp) would be brilliant, as well as promoting reayablility for the campaign!
Honestly, I would just prefer the SPARTAN armour to have a more rigid, military feel. The 4 armours felt too anime and out of place for halo. Given some aesthetic changes, more angular and less curved, some existing ones do have a lot of potential!
(CIO, Engineer, Ranger come to mind here)
For the record, the aviator helm looks like a motorbike helmet... Operator looks better for a pilot IMO.