Call me politically naive, but I reckon GA has to make its usefulness case to people who care about the country folk and isolated communities etc. GA (and the infrastructure thereof) is one of the few resources that can make service delivery to the rural and remote areas of our country possible and - if not too strung up with regulation - economic.
There has to be a case made to the people that care, not specifically about GA, but about the continued rural and regional development more generally. Warren Mundine is one guy that springs to mind (and has the ear of the PM), but I'm sure there are many others.
GA should be promoted as a bellwether for the health of rural and regional Australia. Decline in GA must portend decline for the regions (unless the new NBN/teleportation technology takes off)