Creampuff;
I can think of numerous persons who have potential claims to be aired in court and that data that could help, but is suppressed because it is conveniently 'lost'.
It can be 'un-lost' via a 'subpoena duces tecum' by one or all of the following through an ordering authority with their interests at heart, not CASA or ATSB's.
One is a flight nurse who I understand has received nothing by way of compensation for ongoing problems. The pilot could be vindicated and have a claim against everyone tainted with this debacle. The flying public could be given ease for safety concerns and the whole lot could help teach pilots from the lead up to the final part of the flight. Weather providers could be helped by lessons learnt. Otherwise why carry the load in the first place when a carton of XXXX would fit.
I would like to know WTF happened and the CVR would more than likely help. Or maybe I'm just not important?