If you truly believe that, Blizzard, show me you mean it. Because WoD didn't show me.As long as players are happy and enjoy the game, the team doesn't mind extreme peaks and valleys. They just want to ensure you have a great experience and feel like you got your money's worth.
Quel'thalas and Plaguelands have been fully recovered. Stratholme is now the main base of the Argent Crusade. A conflict with the Forsaken and the humans/dwarves happens in Arathi, and the Alliance finally halts the Forsaken advance, capturing Stromgarde and pushing Forsaken to the Hillsbrad and manning Thoradin's wall. Parts of Hillsbrad are liberated as well. Gilneans also push the Forsaken out of their kingdom and re-inhabitate the city.
Other than that, I don't really know what else should happen. It's just that currently the situation in northern part of Eastern Kingdoms seems unresolved.
Old world is FINE. God damn I couldn't handle another Catacylsm. But if Blizzard want's to re-do something, re-do Outland.