Lead. I believe the proposal is being driven by AsA because of the Mangalore fatalities.
It really needs to be instigated and driven by the Airspace Office at CASA.
Such major changes require an individual who has the leadership abilities and self confidence to “sell “ the need for change and the way it should take place
I believe an increase in E will only work and be safe if it closely follows the FAA proven system. This proposal does not. As an example , for E to work at low level we will need to change to FAA pilot and ATC procedures.
An FAA expert needs to be employed to advise on this.
There is no possibility,in my view, that such a major change could be introduced by December. Too risky!