I wonder if you might create "Tags" for Library resources. This would allow us to create a tag for a grouping of books that would be visible on the resource page, but also allow us to generate a (printable/sortable/exportable) list of all the books tagged a certain way.
The specific use case would be to organize the books that are designated as being in our Reserve Collection (which is identified as a "location" in our library) according to the course with which they are associated. So, I could have a BIB201 tag for the books that are listed on Reserve for that course, in addition to having them be moved to the "Reserve Collection".
I'm sure there would be other uses for tags as well.