Thanks, @Rich87. Please know GBIF are actively working on bringing this into GRSciColl and it is available in the API already. For example, you can see these counts in the collectionSummary field at the bottom of the response for NY Botanical Garden. Today this is populated only for records sync’ed from IH records (happens automatically now) but will be expanded for more collections and moved into the user interface.
This is limited of course, and more expressive descriptors should be available when metadata in (N)CD Standard is provided.