This is a good source for additional Exchange Server 2013+ monitoring, brought to my attention from Exchange PFE Dave Groll!
See Volkan Coskun's blog post here
Update 30 Nov 2018
NOTE this content is no longer available - posted Volkun's custom extension pack on TechNet Gallery here
This will help provide additional visibility to individual objects like Mailbox Databases or Transport Queues that are otherwise hidden in the health sets.
NOTE my Lab environment is Exchange 2016