It would be great to be able to share only the attributes of a hosted feature layer or view. At present, if you share a hosted feature layer or view, anyone with access to ArcGIS Pro can access the layer/view geometry via Catalog.
An example of how this would be useful:
You share a Dashboard with the public and the Dashboard does not contain any maps, you only want the public to see the summary of the data on the dashboard, not the locations of the features.
A step further would be to only share the dashboard display with the public, and the attributes would not appear in Catalog at all.