The fact that Dolan allowed a "management by matrix" approach to classification, and by implication resourcing, implies that he knows nothing about Aviation safety.
I know what it feels like as a "know nothing manager" in a field I shouldn't have been in (Large IT systems) and my first response to the challenge of responding to highly complex and confusing situatoins was to try and build a set of rules like Dolans - with a little box into which to categorise each and every event. Other floundering managers will do likewise as they struggle to make sense of what is happening.
Unfortunately life isnt like that, as I found when one of my systems went down for only Four minutes at Three AM, and that "minor" event (in my stupid opinion) almost brought a chunk of Melbournes infrastructure to its knees, as I was later forcibly reminded.
All life is valuable and to categorise their implied value makes a mockery of the very reason the ATSB was established.