With Open Data sites that host a large number of layers (300+), it would be nice for the end user to have the ability to download all the items from the site with a few clicks instead of sifting through every single layer to download.
For example, https://hifld-geoplatform.opendata.arcgis.com/ hosts over 300 layers and it would be nice to keep a local repository for internal use but downloading each individual layer is really tiresome.