Google recently release higher res imagery of Sydney (still no maps), which has inspired me to revamp my google maps tools using the new (still un-official, un-documented) API.
I've got what I think is a better UI (although I kind of suck at UI so other will probably disagree), and I've also made the NSW address lookup feature actually work.
I'd really like to start a community mapping projects that uses GPS tracks recorded by people to create a free vector map of Sydney, but it seems both hard and a lot of work, but you never know the power of procrastinating over a PhD!