These seem to be gone with the pre-patch and I personally did not see it coming. Just to summarize, each WoD profession weapon/armor was upgradable via crafted tokens from level 1-6 where ,other than the ilvl upgrade, some of the levels had their own unique appearances too.
Is there a way we could get them back in future? Perhaps via separately dropping Draenor recipes? Sure its old content but its content nonetheless.