Part 91
Leadsled,
Glad to see that some finally agree that the current regs do not require radio equipped aircraft to broadcst at non CTAF(R) aerodromes. I recall that idea being disputed here and elsewhere.
Surely the Part 91 Control Board retains some ability to influence this though.
The current initiative of CASA only involves ammending CAR 166 and/or 166A.
When Part 91 comes into existance in place of CAR 166/166A it can mandate that radio equipped aircraft use them.
In fact the last draft of Part 91 I saw did exactly that. (refer Appendix 91.315 para 1.9 & 4.7)
Perhaps you can confirm that is still the case (I fear that my draft is out of date).