Dick,
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.
Oh yes I do. I can't get a clearance because ATC cannot separate me from other IFR using radar standards. Blasting into the airspace anyway as VFR would in my view be stupid. I know I'm pretty clever and can run segregation more efficiently than non-radar standards, but even I admit that I couldn't safely manage traffic that is inside radar standards.
Plus, in Australia, E includes a mandatory transponder requirement that does not exist in G
Transponders are mandatory above 10,000ft in any type of airspace and they must be on, if you have one, in any type of airspace. E is nothing special except when we're talking about below 10,000ft.