> What if we could automate the copy-on-write behavior? If the form used in a SketchMorph could be “locked down” so that any attempt at modifying it could be caught. Then it could either just warn the user, or it could be duplicated automatically.

I do like the sound of such an idea..

> I can’t easily think of a solution, but maybe it’s possible.

Okay, lets let it simmer, I'm satisfied we at least explored this idea
for now, thanks.  I could also consider extending
SketchMorph>>#veryDeepFixup: into my own package..