Blizz has said in an interview that they're looking into bringing back the older armor in some fashion. For my Rogue, I want the assassination set, and Deathmantle, the tier five, back in Burning Crusade, the last time they had roguish armor.
And I admit to an inordinate fondness for the tier four Warrior, Warbringer.
Is it just me or is the odd number armor sets for the Warrior, or just melee in general, look dorky, but the even numbered ones look decent to cool?
Also, I still have the DK starter items, the greens and the blues, which are still the coolest looking armours.