Good Idea, I’d love to see it implemented as well! It would be good be able to set the duration and have the possibility to activate / deactivate the link.
I would like to see Bricks implement something similar to this which I believe is also the way Breakdance does it which I thought was a unique implementation, allowing a query param to be added to the URL for example which lets a user view it publicly without needing a user account. I made a comment about this on Facebook, btw..