There are signs of a coming 9.1.5 patch. Probably, Blizzard would implement a little bit of lore, reduce the grind, and maybe they implement a Legion time walking.
What if they decide to return the Mage Tower?
Would your return 1 week just try to get the artifact skins?
Do you think WoW's subs are so low that Blizzard needs to bring back this popular feature?