I'd like to save artwork to a local folder and be able to specify the file name. I'd use "folder.jpg" since this is a convention used by windows explorer but it should be configurable for other OS. It would also be nice to have the comments field (usually a review) saved out as a text file in the same folder.
Now for the really killer feature:
I'd really, really like to see a feature that would get the artist picture from some web resource and save to a specified directory or some configurable relative path. I have my library folder structure like
I am going to add an option to extract your artwork from your files and put them on the hard disk. This doesn't need to be tied to downloading from Internet though, artwork is already retrieved from Internet where possible when correct from musicbrainz. But you you probably want to extract artwork from all your files whether the artwork was grabbed over the net or not. But I could add preference - 'when adding artwork add to file rather than tag' with
options as you describe