Use case: TERRA-REF
A oft-requested feature for the TERRA-REF service was a faceted search interface similar to the one provided by NSIDC or the NEON Data Portal . We went so far as to prototype something using SearchKit before moving on to other priorities. TERRA-REF also ran into the problem that the discovered "Data" needed to be formatted as timeseries, not individual Clowder datasets (an implementation detail, but a single scan of the gantry produces thousands of related files, all stored in separate datasets in Clowder).
It would be great to have a SearchKit or similar interface that worked out of the box and allowed the admin to configure which metadata elements would serve as facets.