We should start with the question: What do the rules require?
That would lead to an automatic answer to the question: What should the CAAP say?
It is a sad indictment on the state of Australian aviation that the answer to the first question is not instantly and universally known and agreed.
Bloggsie: If a VFR bugsmasha is taxiing for take off out of ‘Sandlewood Park’, about 15 nms to the West of Mildura – not in ERSA and not marked as an airstrip on any chart – for a climb to say 9,500 on a track slightly East of North, who’d be assisted by the taxi call being made on 126.7?