Some workflows require obtaining multiple datasets from an open data provider and downloading them one at a time is a pain, especially when consuming the File geodatabase format. The result is the end-user obtains a number of zipped file geodatabases for each dataset, requiring unzipping and then they contain a single feature class so merging them into a single datastore is also required.
Consider adding a cart option so all datasets could be added to a cart. Once the user is ready they execute the cart and a single download is generated for them in the format specified.
A zipped file of all spreadsheets, KML's, shapefile
A zipped geodatabase of all datasets