What functionality is missing? What is unsatisfying with the current situation?

When I "View World," as someone who is able to private articles, I am still able to see any articles that are not visible to the visitors on my page. I would like to be able to see exactly what someone visiting the world would see, just to feel more confident in the layout of the world (linking articles, maps, etc.).   Just a button to "view as a visitor" would work.

How does this feature request address the current situation?

It will allow for writers to be more confident in the way their world is suggested to their audience.  

What are other uses for this feature request?

The ability to show others your world without having to make an entirely new account.