About Melbourne, agreed. There is a plan to build a third runway but it wouldn't be completed for many years. What that city needs instead of a 3rd runway at MEL is a Western Sydney type airport but built to the south-east of Melbourne, closer to a large number of people in the eastern/south eastern suburbs. I remember there was a proposal for another airport somewhere near Tooradin (which has major roads and a rail line nearby), does anyone know if it's likely to progress?