Anyone else wonder if unsubscribe links couldn't be shifted to the mail client somehow? That way, they could be positioned in a uniform place and handled in a simple way so that you didn't have to scrounge through an email footer looking for the 5px unsub link, and then go through that horrible 'You need a password to unsubscribe' process half the time.
I'm imagining an 'unsubscribe' button up near the top of the email, maybe based on mail headers or something else, that just worked. You clicked it and you were off the list. (Might need ways to verify the identity of the subscriber, but I'd hope this could be handled better than it is now.)