When using the Apple Pencil one of the most useful features as of late has been the double tap toggle back-and-forth between your current tool and the last tool used, but it would make a world of a difference if you could:

add support for a toggle that can activate a double or triple tap option on the Apple Pencil that would function as an immediate undo button!! Like undo last stroke, text, paste, action, etc

A triple tap on the pencil would allow the undo button to work without interfering with the toggle between tools feature! Making the handwriting aspect of the app that much more seamless!