I would love to save myself a few clicks by having the "Secure sheet link (accessible by shared users only)" link available in the main UI.
My mock-up of this would be something like the attached.
A user could just click that small hyperlink icon and the share link would be copied to their clipboard for pasting.
I do a lot of pasting of that link into emails for easy referring of others to the sheet so this would speed that along.
Just my $.02.
