Love the idea. Leveling in WoW is a tedious, boring and time consuming process that simply isn't interesting after nine years. Add to that the fact that WoW is a themepark style MMO where you can't actually change anything and all the questing is always the same and the fact that questing is a huge barrier to re-entry for players who have left the game and want to come back and the decision is pretty clear.
I am against forcing the player to do any kind of "close your eyes and wait for it to pass" content, that should be avoidable.