Idea is to have a Cancel Sketch function/Button in the drop down menu for sketches that would remove any changes made in the last batch of editing.
Reason for this is the ESC key just closes the sketch with any changes upheld and after having made many many changes to a sketch it is a bit redundant to have to CTRL+Z (a hundred or so times) or use the drop down option for Undo (in this case 3x times due to list length of Undo's).... Would also be nice to see ESC key as the shortcut to this function to cancel any changes made to a sketch.
Cancel Sketch Button
Too many Undo's....