I've just had a look at the definitions of an "incident" - and I don't think the narrow definition of reportable incident as defined by the ATSB would include this type of situation until there is an actual breakdown of separation/near miss/collision. A colleague's past experience with the ATSB on reporting a similar issue outside their strict definitions was dismissal of same....just a phone call received asking if there was any actual breakdown of separation etc. and once it was clear that there wasn't, was told that it probably won't be looked into any further. Reactive safety responses, I'm afraid, not proactive.
Surely it would be better to have a sensible chat with a sensible person who could see the issue and respond accordingly....it really shouldn't be left up to GA pilots to push airline safety.
Flyer517 - agree with you completely.