With the proposed implementation date in December and the chance of an early election, maybe there is some politics behind this proposal?
There is no airspace decision in Australia that isn't influenced by politics - either 'internecine regulatory/ANSP/big operator' ones or 'get voted in or out of government' ones.
The proposal is now stinking to high heaven as being the usual pre-election Dick distraction. Doomed to fail as a proposal and complete success as a political tactic.
Time to speak up, Dick: Do you know who's driving this proposal and, whether or not you do know, what do you think of its merits as an airspace arrangement?