We just had the 4 "doesn't need any explanation or asset" classes spread to all races (Rogue, Mage, Priest, and Monk), and now we are left with the remaining
-Warlock: Doesn't need assets but needs EXPLANATION
-Shaman, Paladin: Needs Assets and Explanation
-Druid: Needs entire models redone and a lore explanation on where the fuck these came from.
So naturally means locks are probably next. I assume going through some story like "The Light isn't inherently Good" but for Fel "Fel isn't inherently evil" and would have to really show where the hell these new guys came from since even with that line of thinking Dranaei (especially Lightforged), Night Elves, and Mag'Har are not going to be like "oh gee I guess its ok"
Feel with Locks should be done in phases or reintroduce exiled factions into the groups in order to facilitate warlocks, maybe add some customizations to show it.