Dick to suggest that the accident at Benalla was caused by the class of airspace is fancifull to say the least, granted if they were conducting a two crew coupled ILS into Benalla with full ATC service and EMS on the ground, perhaps a different outcome.
I presently fly aircraft with ADS-B,TAWS and GPWS, great having the information at hand, but there are still the human interface errors.
Australia has a considerably lower population than America, considerably lower budget and movements than US ATC, we can not afford that level of service in Australia.
Whilst ever aeroplanes fly, they will take lives, hopefully less and less as our management systems develop,
Aviation will never be completely incident/accident free.
Many accident occur due to poor training and/or bad decisions.
Reform could be seen as re-inventing the wheel, if not actually achieving anything ?, how much did the failed NAS project cost, including redundancy of ATC staff etc etc and what did it achieve for that money ?, do you see my point ?.