I thought the question being discussed was the proposed requirement that radio calls be made "in the vicinity of" every airfield even when in transit. I have no qualms about mandatory calls if I am going to that airport. But in transit? And on what frequency?
As it is, going to YMIA from YMMB via Kerang, my calls include: advising on area frequency when entering corridor to Kilmore, then calls overflying Mangalore, past the DZ at Nagambie, YKER and YSWH. You want me to make a call when I'm abeam Echuca and overflying Robinvale as well? On Unicom, CTAF or area frequency?