I'd like this because I also use tags to make sure i know what editions I have/ if the book is available at the library or in audio anywhere. but I would want there to be an option for making multiple selections for cases where I'd want to know the audio is available on both hoopla and scribd for example or to clairify if it was available in one format in one location and another format somewhere else.

That would be great! I have tags for my owned books so I know where they are located (Libro, Chirp, etc.), and then have tags for books in Libby and whether I have a book on hold, or if it's available now. Having that be one less step with a drop-down menu would be nice.

Yes yes yes!

I'd love to be able to mark books that are available from my library as such. It would also be lovely to have an option to mark signed copies under owned books.