Well it is now 2017 and the debate is still going on about where to berth the oversupply of cruise ships on Sydney Harbour and no closer to solving it.
Someone in this post mentioned about putting the cruise ships at the old HMAS Platypus dock and I think that has some merit but would probably need dredging to accommodate the large ships then you will no doubt get resistance from residence in that area about causing congestion in the area. Sydney needs Tourist money to help local businesses and increase jobs.
Another idea is maybe a floating dock that can easily be put into place when a ship is expected in port, bit like what they do when the International boat show is on in Darling Harbour but a much bigger scale then remove when not in use and use charter boats to ferry the passengers to Circular Quay or pick up passengers for their booked tours.
Maybe a good place to put the floating dock would be in that area between Robertson Light house and Bradleys head or around the corner at Port Jackson Bay as these areas are out of the way of the shipping lanes. May need dredging to fit the ships. I am pretty sure that the HMAS Melbourne was anchored in that area between Roberson Light house and Bradleys Head but more near the Bradlys Head side and the Aircraft Carrier Melbourne had a draft of around 25ft, so is possible.