I don’t think they’ll do that.
Having whole zones, questlines, mounts, mog items, toys, etc. exist in some non canon area accessible in game would be extremely confusing. Seriously all your Covenant mounts, items, titles - what would those be in reference to now? Do we just head canon all of it because I don’t know how to explain the heavenly Voltron robo lion things from Bastion.
No it seems far more expedient to me to just WoD the whole affair. And by that I mean we move on, take what bits actually worked, and just never speak of the rest of it again.
Seriously I missed WoD and I’ve never once been even slightly confused about the story. Because Draenor rarely if ever comes up. The Mag’Har from that AU became a playable AR and I still didn’t need to know anything about WoD because the one quest there is set decades after the story events.
And I’m glad that was the case as I’ve seen some Mag’Har stuff from the very small amount of WoD content I’ve played. IE; the intro quest like 5 times before the leveling revamp and a lot of raid content for mog items. And industrialized, WW1 tech by way of Mad Max Orcs were a cool idea even if they were a baffling lore decision. I’m happy to have them kicking around and hope we see more of their stuff. I could go for one of those armorered trains of theirs steaming through The Barrens.
Figure we do the same with SL. Sire Denathrius is pretty popular and the setting could use a Lawful Evil big bad. Him and his dreadbois being the settings answer to Lucifer and devils is imho more interesting than just another type of basically interchangeable demonic arsonist.
Maldraxxus more or less worked, I thought. Having them on hand as a Necromancy hotline sounds good. The Forsaken are too partisan for that job and the Knights of the Ebon Blade have the personality of a plank of wood with a frowny face scribbled on it. So why not wheel out Merelith and Kevin next time we need a death goop specialist to spout exposition. Seriously we’ve Lich Hubert Farnsworth and a birthday party blob, I don’t want to see Bolvar grumbling ‘Champion’ at me when ‘MY FAVORITE APPRENTICE!’ is on the table.
I also quite liked Ardenweald. I know it bothers some fans of the Emerald Dream as it’s basically a depressed version of it. But Weald seems like a good compromise as it’s not as tied into Druid and Nelf stuff. Like I was shocked at how not out of place my Undead Warlock felt there as horrific unbreakable curses that give you soul leprosy are a thing. I don’t think you could’ve done that with the Emerald Dream without ruining it. Plus the Winter Queen has a pretty cool Del Torro esque design.
Those would be the only babies I personally wouldn’t throw out with the bathwater. But generally it seems wiser to just ignore it for awhile, see what seems to have any enduring popularity, keep that and then let the rest fade into irrelevance until it’s quietly soft retconned.