So Sunny Coast goes from D to G but Rockhampton goes to a Restricted Area with a mountain of things to do to get in there? Why?
The new "Approach" service ROK and MKY has is the difference. Approach is going TIBA, not the Tower. That leaves the airspace from ground to 4500 left unable to be managed by anyone expect Approach during Tower hours. A few months ago it would have been the same as the Sunshine Coast, and far less complex.