This one may not be required as much once the "is Manager" option is fixed. We have been using department field and Automation at add the managers/directors for different groups as subscriber to the tickets from their staff and centers.
When we send an update from the ticket system we can uncheck the directors/managers and techs from receiving the update, however once the client responds an e-mail update goes to all subscribers. It would be nice if that check box for the who is receiving the e-mail would be persistent and prevent updated from going to everyone. Currently we have tech and directors that remove all e-mail notification because the amount of noise in the e-mail system and some times miss the updates they really needed. Also one they have turned off all notifications you need to e-mail them outside the ticket to update them causing information to now be in two locations.