Do some reading, people. RFFA into Ballina and three other sites...including Port Hedland...is due to pax numbers kicking past the threshold. These rules were set years ago by someone who thought sites were over serviced...now at these sites sounds like sour grapes.
Lowering class E will not work over Ballina because the SSR cuts out or is very intermittent below 5000. Put class E where there is no chance to monitor ALL traffic in that space is a recipe for disaster with the poor guy on the other end of the mike taking the hit. The alternative is one in, one out. Not a good outcome.
To reiterate Capn Bloggs...Either SSR/ transponder or ADS-B on ALL and you can have whatever airspace model you fancy. Put a receiver in at sites that go past a movement threshold goes a long way to making the circuit/app environment safer if you MUST monitor remotely...otherwise...this I just the same argument that has played endlessly for over the last decade.