This format is flexible, it’s easy to implement, and Adobe, if you are listening you should really give SQLite a serious look. And if there are any other companies out there wanting to work on this- please get in touch with me (firstname.lastname@example.org). I’m not married to Acorn’s format or table names, but I think it would be a great start.
It’s 2013. Wouldn’t it be awesome if you could hand off a single layered file format to multiple image editors, and it would just work?