The goldfields area, as most pilots know who fly in that region would know, can get extremely congested at particular times of the day, hence communication in any form whether by broadcast or traffic advisory/separation is essential, since the majority of this traffic is high performance turboprops with some jet traffic thrown in also.
I get the feeling that the new system is going to make things very difficult indeed, if not , possibly with an element of danger.
I may be lacking a little in knowledge with regard the new airspace, and I'm definately not the only one, but the information has been a little confusing at best.
Seems to me these days that saving the all important dollar has overtaken ensuring safe skies to a big extent.