I voted - Heirlooms.
Reason: Heirlooms are for whiney quitters that don't want to actually experience the grind in an MMO.
(For the record - my "every class at 110+ that hasn't been a MAIN wore heirlooms)
Heirlooms were introduced to help cater to newer players that wanted to get to max level faster, due to already being behind the power curve when they purchased the game. IN Classic-WoW; that X-Factor will not exist.
Sack up and hit WPL like the rest of us to get level cap!
Though I'd still play, even if they added heirlooms, I'd just target guys/gals wearing them.