ignore what the cynics are saying.
A degree sets you apart as a professional and is pretty much a pre-requisite for a long term career at the airlines.
Also, don't underestimate the benefits of networking at places like Swinburne which can be the catalyst for entry into the airlines.
I'm a long-term private pilot who flies out of Moorabbin. I have seen many young pilots work their way up the GA ladder into the the airlines.
I have also seen many Swinburne graduates going into the airlines quite young. A young Swinburne graduate helped with the instructing for my NVFR rating. One day he was missing from YMMB. After a short stint instructing he landed a job with Virgin flying B777's internationally as an FO.
He always impressed me as being competent and professional, a very good instructor in spite of his young age. Some of this would have been natural ability, some training from Swinburne/GFS.
If I was 20 years younger I'd do an aviation degree. Great entrance to a great career.