I was creating a member portal app for our products and was creating 2 kinds of block per each kind of page to separate the views according to a user. Unfortunately there was a change in the requirement to have some of the pages accessible to a non-logged in user, and changing the visibility of the pages and per each of the block within took too much time.
I wanted to look for a way that I can see all pages in one screen and see the visibility permission per each of the page and the blocks within.