The monthly reports have no purpose as all the say is all is OK or updated. ie. one liners.
For each month they should list everything that changes on the site over that time period to be of any use? Listing the changes will also inform clients of how important and how much does go on behind the scenes. With one off notifications you do get the list of say - plugins that require updates or were updated or could not be updated.
Premium Plugins are not updating most of the time in the Hub.