Look into the possibility of an optional edit mode overlay.

[muhuk]

• mesh vs bmesh differences. How much of the implementation needs to be duplicated?
• How to detect a structural change in edit mode. So we don't keep running stats collection over and over, to a degree it impacts edit mode performance.

[muhuk]

See also this review.

[muhuk]

GeometrySet API added in Blender 4.5.

# Get the final evaluated geometry of an object.
geometry = ob_eval.evaluated_geometry()