Fujji. Don’t you see the only reason CASA is proposing ginormous CTAFs is in an attempt to get the system which requires VFR pilots to be monitoring ATC frequencies to work?
Remove the frequency boundaries on the charts and there is no need for the giant CTAFs. We could use the NAS procedure from page 27 of the NAS Reference Guide as follows.
-monitor and announce on the CTAF “ - when en route if operating in the airspace normally used for arriving and departing traffic at an aerodrome “