The collection views offers fixed columns, which are sortable, but not configurable. This foils a pretty data representation.

For instance, one could be indifferent about the "Rating" column, which one (or many) never use, but it'd be particularly useful to have a "Date Added" column—or any means to sort by entry/id at all.

Another personal user story: I never use the "Format" column (because I user 1 format only) and I don't care for the "Label" column, but I'd desperately need columns for "Packaging", as well as "Language" and "Found in collections".

In most frontend data represenations, it'd be very easy to implement this. Data backend is ready in no time.