I think one of the best issues you could do in 2009 would be the Victorian transport plan that was released by the government towards the end of 2008. (See
http://www4.transport.vic.gov.au/vtp/ ). The reason why I'd recommend this is that it actually has HEAPS of great perspectives you can look at this from and various stances you can take, For example, whether the plan does enough to promote greater use of public transport, whether the project completion dates are close enough to bring short term relief to transport users (road and public), whether the cost of some projects are too excessive and whether they could be better spent, what sort of environmental impact these projects will have, eg, building new roads and rails may be at the cost of the enriornment, and failure to promote public transport may mean higher greenhouse gases etc.
There are massive like 50+ page documents you can look at on that page that you can use as your research. Also Sir Rod Eddington's report on the state of Melbournes transport system can be found via google.
There is also a shorter brief PDF overviewing the issue.
Furthermore...I should have said this before but when you think about it little pissy short term issues are really crap to argue about. They've really got no meat in them to argue about and chances are you'll end up just repeating yourself and making arguments based on just "i think that" or something weak like that.
The thing about the transport plans for Victoria's future is that if it's not planned, managed and implemented properly then the consequences for Victoria are diabolical. Imagine what sort of effects congestion would have on Victorians.