You do not understand. In the US under NAS an IFR planned aircraft climbing in E before gaining a clearance gets exactly the same information from ATC as an IFR aircraft climbing in Australian G.
That is traffic information on all known aircraft.
That's why E is superior to G as E allows a full separation service when IMC exists and a G service when VMC exists.
Plus, in Australia, E includes a mandatory transponder requirement that does not exist in G
I introduced the mandatory transponder requirement without a RIS when I was Chaiman of CASA. This was to improve safety by encouraging more E airspace so that finite resources could be better allocated.