This group of Senators appear to understand the deeper implications of the Pel Air incident and they don't give the impression that they are simply looking for a donkey to pin a tail on (spoiled for choice).
The only way this group of Senators can make a real difference is if their party gets elected and the Transport Ministry is allocated to a politician who is serious about change and is prepared to accept any or all recommendations the current committe makes. A major flaw in the current arrangement is the lumping of aviation in with all modes of transport and regional services. It is then a minor part of the Minsters portfolio and the attention it gets is commensurate with its profile. The votes for the Minister and by default the government is in the Regional Services part of the portfolio. Until aviation has a higher profile within the government then any recommendations from the Senate are treated with the same two page contempt that the last Senate report received.
Aviation only gets a higher profile by either: Someone like Senator Fawcett being made Minister (unlikely given its position in cabinet) or TV screens full of mangled metal and a major airline's logo on the tail.The media are more interested in Senator X position on poker machines than his position on aviation.