Collectors rejoice, completing a quest in The War Within now awards all appearance rewards, regardless of weapon or armor type! Earn plate cosmetics on your Monk or leather on your Priest, just from finishing the same quest.
What's more, there's also a new dropdown menu that allows players to swap between classes in the appearance tab — helping players see what transmog they might/not have without changing characters! Note this is sorted by class rather than armor type, so exclusive cosmetics like the elusive Kor'kron Dark Shaman Armor won't show for Hunter.