Yeah, I've thought about how interesting it would be to have an Ayumi: Behind the Music type of thing.
Of course it'll never happen in the US. And even in Japan, I don't know if it ever would, because she isn't very open about her childhood. There was the NTV Documentary where they go into it a little bit, but they still really skirted around the subject - the documentary makers even said that they were asked not to use pictures of her childhood.