I think that a feature Thomas Robb mentions in another forum would be nice,
Moodle versus Blackboard --Forum messages read
Hopefully, whenever a MyMoodle page becomes possible, there will be a way for the user (Admin, Sub-Admin, Teacher, Teacher Assistants, Students, etc.) could get this type of information also on their page. That way, they would know what forums they are subscribed to have additional posts in different courses.