I would like to be able to see legacy data (Personal GDBs, Coverages, etc.) in Catalog.
I understand that Pro doesn't see them because it doesn't use them.
However, knowing that they're there is still useful information so we can figure out what we need to convert before losing ArcMap.
Having them appear in Catalog greyed-out, or having a toggle to choose whether or not to see them, would be great.