Alpha. The 50 passenger airline that was involved in a CFIT in Irian Jia a few weeks ago was fitted with GPWS. TAWS GPS and ADSB plus a fully trained expat two pilot crew and the accident still happened.
Are you telling me that an approach radar service would not have helped prevent the deaths of 50 people ?
Why bother to have such a service at Canberra - lets go to 1930's procedural like Hobart , She'll be right mate!