Comment 1 for bug 1673608

I currently tell my students to save a new default.svg document to the user profile templates folder, that way they know more about where persistent custom templates, symbols, etc, can be placed.

That said, a button in the Document Properties panel that selects "make this the default document" with a radio button pair that chooses "For just me" or "For all users" might be handy.

Regards,
TD