It’d be great (IMO) to have a spot for a Field Group Description so I can annotate what the group is for and where the fields will show up. That way when I wind up making changes to something a year down the line, I know what I was doing!
This seems to have been added, and now appears in the “Description
Shown in field group list”.
What I’m looking for is a way to have a “Description” for the group that shows up among the actual fields on the post edit screen. It would be nice to contextualize for users what to expect from the overall box, separate from the descriptions of the individual fields.