As a regular YSBK user I notice that the plan originally derived by BAL just hasn't come about. I believe the concept was to price GA out of the market, thus making way for RPT and jet ops.
Phase one was successful, GA has been effectively priced out. But the hoped for RPT never came. Why? There is no infrastructure near YSBK to support it. No trains, busses or even a cab rank. When old mate airline disgorges a bunch of passengers, where are they supposed to go?
There is a terminal building that I have never seen open. But it has a car park filled with UNSW students, and not even a turning circle or drop off point. Welcome to Bankstown, I hope you have arranged a lift, on a bicycle, or rickshaw, or have the ability to teleport. It's the only way you're getting out of here.