I agree that a larger runway and terminal would probably be beneficial to DND, but that's not going to happen any time soon, if ever. The land on which the airport is based is mostly reclaimed. Although there is space either side, no one is going to fork out money for something they may take a very long time to get a return on.
The runway is aligned as such that there is barely any noise from aircraft for the residents who live near the airport, which is fairly rare these days. I know, I used to live just off the Perth Road and saw aircraft on finals every day from my kitchen window, but never had an issue with noise, even when the jets came in!
