I think it would be really cool if the team used the existing robust metadata database and infrastructure to support LMS features comparable to something like Libib.
Libib is a physical library cataloging application that allows you to scan your books in and keep track of them digitally. There are a lot of cool features that branch from this, like tracking who you lend books to.
I know that currently you can already mark books as owned, so I think that leaning more into this LMS featureset would be really awesome.