as pilot in the inland area, i think that there is a case for a ctaf below a certain alt eg. 5000'. area freq would be available if required. that way i would only have to listen to traffic within 70 miles of me. obviously this would not work in the more congested coastal "J Curve", but would work just fine in the majority of the inland. most ifr operates above 5000' except when there are huge westerlies. the new charts have one problem that i can see straight up. the vtc area freqs are very hard to seee as they are the same colour as the relief colours, especially in the qld south east. my other beef is that when ifr pilots report TOD to centre, they think they are the only ones around. no distance or direction from their destination. fine if you are familiar with a particular area and daily traffic, but what if you are not.
just my thoughts.