PAF. You are very adept at avoiding the reality that pilot T&Cs must rise.
If, as you say, it's a people shortage driving this issue, why then not bring in lots more people. Not PILOTS on 457 visas, just more PEOPLE? People with/without skills who can fill jobs at the 'bottom of the market'.
If there is no skills crisis, just bring in immigrants, full stop. There should be no need for 457 visas, as the market will function and provide T&Cs that will attract the right applicants at the bottom of the aviation industry (or even at a level commensurate with modern thinking ie directly into jet cockpits).