As far as I know, there are no new heirlooms in WoD that help level alts, but are ther anything else?
In Cata we got head and cloaks.
In mists we got legs and there's the 300% potion.
But in WoD, nothing??
I don't mind "slow" leveling through WoD or even MoP, but if I could get through the other parts a bit faster, I certainly wouldn't mind.