Initial question/idea in this post -
Configuring clustering symbology on point feature layers shows the numeric endpoints of the dynamically sized clusters when viewing symbology in the Contents of a Map, but when the same Map is used to make a Layout, the labels in the Contents and Legend default to qualitative (e.g. "Low" and "High") and cannot be edited.
It would be very helpful to be able to include the numeric labels in the Layout. These values are evidently calculated dynamically for the Map itself, so perhaps they can be piped over to the Layout Legend labels somehow as well?