I never said it would be easy, I just said that you shouldn't break can for the sake of AUTOLOAD. But I am not a big fan of AUTOLOAD, while I do make (occasional) use of can so I would sooner throw away AUTOLOAD before I gave up can.
I will take you up on your challange, but with one change. I ask that you post and interesting example of AUTOLOAD, for which I will write a version of can. Partially because I don't like or use AUTOLOAD very much and to be honest would have a hard time coming up with an interesting example, and partially because I am not a fan of writing vaguely specified code for others to shoot holes into. Something like this is clearly complex, I do not deny that, but if you have a solid and well thought out implementation of AUTOLOAD I expect it would be possible to write a version of can to go with it.