Nice summary LB.
No one should ever forget that it is the taxpayer and not the culprits that foot the bill for negligence (or worse) in a Govt Dept. There is no personal penalty in all but a very very few cases - Depts have spent decades protecting themselves.
There is a fascinating case between Grollo and the NSW Govt currently being fought over Barangaroo. Here is one example in a log of issues.
'
On July 12, 2016, Grollo attended a meeting with Van der Laan at which he stated words to the effect of: “We have an obligation to consult reasonably, but after that we have the right to terminate the consultation and move forward with what we want"
A common theme in Govt Depts.