It wont' be a case of no G airspace. There will be 'inverted wedding cake' E airspace over some of the busier non-towered aerodromes, like Wagga, Broken Hill etc. The airspace won't be down to the ground either, but about 1200 or 800 feet AGL.
Anyway, it will still be free to go VFR in G anyway.
Cheers,
NFR.