I had a similar idea come to me the other day. Final legion patch: perhaps a raid in the nether world or argus, kill Sageras. Next expac would be against the old gods. I dont remember if the sleeping Titan is still in Azeroth, but somehow old gods wake and corrupt him/her which will destroy Azeroth. Or maybe we have to kill the old gods which would also destroy azeroth. Somehow have the Dranei/Naruu help with spaceships or portals to a new world (ESCAPE FROM NAMEK!). Old WoW dead, new Wow with new lore, start fresh level 60. I think its pretty extreme, but I wonder how maybe people would play WoW2 with new engine/technology/servers. Also I think the greatest threats are the Void Lord/Shadow Gods. They can probably come up with new stories using that. Im really just hoping they kill WoW and start fresh.