Retailer exclusives are annoying, but as long as they are just cosmetic tweaks I will find a way to survive in this world.
I like the Amazon armor and skin more than the others, but not enough to say "I will use this in Halo 4". This stuff isn't aimed at us, but if it sells copies of Halo 4 it could end up growing the player base, so I can deal.
It is interesting to me that the other major retailers have polished art depicting their exclusives while Best Buy, a company that has been in decline for years, has a rough mock-up of their armor. Nobody has pointed out that the colors and/or design of the retailer armors are matched to the retailers which is why we are seeing a god awful blue and yellow paint scheme for Best Buy's armor.