Suspend Override Check
There was a great addon called "Suspend Override Check" which allowed admins to see which accounts have the Suspend Override option enabled. This addon is listed as legacy and is no longer compatible with WHMCS.
I would like to see this to be an out-of-the-box feature of WHMCS.
Here was the original addon: http://www.whmcs.com/appstore/53/Suspend-Override-Check.html