Dick,
I actually support more E instead of G. However, as others were saying, its not just a matter of flicking a switch. Most enroute controllers have not had the training to provide services in terminal areas. Doesnt sound much but the effect of terrain on control practices is significant. There are also other things which have to be done (short list):
- safety analysis: CASA requires this and its not a quick process
- data changes: modern ATC systems need a lot of data defined
- procedures: how aircraft are processed between groups takes some work to define
All up, and speaking for myself, I will work whatever the aviation community wants. If you/they want G or E or anything else then my job is to provide the service. Just dont expect change to happen overnight.