Dick....no one is debating the shocking situation that exists in australian airspace. The question is, if you are so concerned about the latent risks of RPT IFR traffic leaving CAS at 8500ft, why are you NOT concerned about the equally high risks of the same traffic flying around Class E with uncontrolled VFR traffic?
Class D towers...into Class C extended steps..into Class A air routes/TMA. Problem solved.
Goodnight.