The WoW team seems to have finally begun to step in the right direction by heeding community feedback. And it only took multiple disasters to get there...
Anyway let us assume a true miracle has happened and all these talks of WoW 2, Azeroth revamp, abandoning of the cosmos plotline (Shadowlands and other realms) finally materialize. So Blizzard heads finally tell the writing team to reel it back and go back to the basics and chill out with mystery box chase of the lore and make more grounded stories. The new exiles reach zone proves that they can do it...
So now the biggest pickle we have to deal with, merging both factions because the gameplay is almost dead on one side and it is affecting the other side. But how will this be done without pissing off many people? Before would could always argue some immediate emergency allows us to cooperate but a couple of name characters and a few champions are not the entire faction.
After Legion it was totally possible to say both faction can drop the faction divide and come together but the Horde's genocide of the Night Elves threw a 3 tone wrentch into that. So how do you do this? How do we explain how Orcs and Undead players or NPCs are not killed on sight in previously Alliance locations?
Do we wave the amnesia wand and have everybody be super best friends or would you do something else?