So what happens when the tower is closed? Is it really going to be A down to F245, E down to F180, G down to 4500, E again down to 700 AGL, then G again down to surface?
'Leave then enter and leave control area on descent'
or if there is a IFR flying an approach in the lower CTA: 'Leave control area on descent then remain outside control area'
And if Karratha is going to be the same, the controller controlling something like 1/5th of the world's airspace will also be responsible for procedural approach airspace down to the MDA. What was that about overworked tower controllers being distracted?