My father (of about 53 now) said he would come back to play if the game were how it used to be. He brings it up all the time, but hasn't touched the game since Wrath. Not that this really matters, but I don't understand Blizzard's point of view on how they'd lose money. Sure, they may not make as much as any of their current titles but it would bring so many people back to Blizzard games.
sorry rant