On my post #18 on this thread I said I would post the letter to Mr Greg Russell in relation to position reports.
CASA own the AIP content via the head of power provided by their regs. and they determine, write and are responsible for radio and broadcast procedures. Also being the airspace regulator, they determine what class of airspace is required where and the procedures therein result from that (i.e. "the system").
So why would you write to the CEO of the ATSP/ANSP instead of the responsible source?