Addon direct updates?

I'm updating all my third-party applications in my beloved mac today and it got me thinking, wouldn't it be wonderful if Blizzard let players update their addons right in the game. It would remove the need for most clients, (but I would still keep curse) and just be simpler to update addons. Though I don't think this is ever going to happen because of Blizzard sudden looking down on addons, share your thoughts.