IMHO the issue for the Royal Commission is the Safety of Children.
If someone in a religious order is not prepared to be subject to Mandatory Reporting, then they shouldn't be allowed to work with children.
That is, not in a school, not in a Non-Profit with kids, not running groups, workshops, or anything with unaccompanied children. End of story.
Let them sit in a box in a church all day listening to whatever.
The problem in terms of Catholicism is that the adults see the children as being 'temptation', therefore the child is at fault for the abuse, and therefore the adult can ask for, and receive forgiveess, say a prayer, and go out and do it all over again the next day, guilt free. This is just crazy.
The Priests are prepared to go to jail to protect the 'sanctity of the confessional'.