Class E airspace will replace not only Class G (for a higher level of service to IFR - and also less flexibility off radar), but also Class C. Currently RPT jets and turbo props benefit from a full separation service on arrival/departure from places like Coffs Harbour, Rocky, Mackay. With NAS (and its overlying Class E airspace) they will now be reliant on radar traffic advisories and TCAS to avoid overflying VFR traffic as they climb/descend. Lets just hope the VFR remembers to turn the transponder on!! OOps - I forgot, the RPT pilots have to be looking out the window for traffic closing on them at 300+ knots!
The NAS propoganda is placing plenty of emphasis on the 'natural separation' achieved by having VFR and IFR cruising at different levels - but nothing is said about actually getting to your cruising level.
Maybe?? there are some longer term benefits in all of this, but it seems to be a lot of effort to reduce our levels of service so Dick and his mates can fly wherever they want without talking to ATC.