Blender addon that provides mesh statistics.
This extension does not require special permissions.
Fair point. I am assuming you'd want this primarily for the overlays. Currently entire mesh is iterated to figure out both stats shown in the side panel and also the data for overlays. If this is implemented it needs to be done in a way that doesn't impact editing performance, and that's challenging. I have created a ticket for this in my git.
It would be really nice if it worked in edit mode as well.