Dynamic Lightning is great -- as long as you never need to change or repair the polygons. Without a "Pro" subscription you need to completely remove and redraw a polygon which can be a challenging and tedious operation. I wish the following editing functions existed (without requiring a "Pro" subscription): NOTE: The functions below implicitly require the ability to select an endpoint or line segment of a previously drawn polygon. 1) "Sever" a line segment. This function removes a single, selected line segment but does not add, remove or alter any endpoints unless the action also "orphans" a single endpoint in which case it too is removed. 2) "Move" an endpoint. This function moves an endpoint while keeping existing line segments attached to it. 3) "Remove" an end point. This function removes an endpoint. If the endpoint was a terminal endpoint the attached line segment is also removed otherwise a new line segment is created between the remaining adjacent endpoints and the previously attached line segments are removed. 4) "Extend" a line segment. This function adds a new line segment that is attached to the selected endpoint. Thank you for considering this suggestion.