When a user logs out they are showna screen with the option to return to the library. If you don't want other users to have access to the library and only want to provide them with a specific URL to access then this user experience isn't great.
This configuration already exists for closedAnalysis and for errorPage, so would be useful to extend to logout
example: <closedAnalysis showOpenLibrary="false" showReopenAnalysis="false" redirectToLibrary="false"/>