I think Blizzard needs to make their old work, not obsolete. We have all these Vanilla, BC, Wotlk, areas that get old and stagnant once they're outside "current content." Like you said in this video, I'd like to see us have reasons to go back to other areas. Give level 90's(100s) reasons to explore the world. I miss the "EPICness" that WoW had in Vanilla. Everything seemed so big and vast, no we can just fly everywhere. And look up everything on wowwiki or w.e. I miss the sense of unknown and adventure the game used to have.