Whoever was behind that "Airline Pilots Representative Organisation" submission would seem to have a lack of understanding of airspace and air routes (we don't have "airways") architecture and procedures.
Also, Ambidgi have no involvement with ARFF (which is a function licensed to Airservices under a CASR Part) nor UNICOMs, nor I suspect would they want to. In fact, when there was a trial of a UNICOM at WG (or was it DU?) one airline's submission was critical of that service.
Whether the traffic or pax numbers justify a TWR, I don't know.
The normal - and formal - procedure would be for CASA's Office of Airspace Regulation to first conduct an aeronautical study of AYE, and the outcome of that would dictate what if any change to airspace or air traffic service was required.