Popgun,
We agree on many things, but....
The ATSB is still, in many ways, the model investigator and is world leading in its approach to accident and incident investigation. The NTSB is still into pilot error and single accident causes, IMHO the typical US historical dark ages. May I recommend the following as a great read for the intellectually curious:
Analysis, Causality and Proof in Safety Investigations
Stay Alive