Lack of DTI on a grungy day might make a difference. I wouldn't want to do it.
They deserve better; as pointed out on another thread, how much would a bank run pay in tax via fuel; what will they get for it? Gotta love the rationale behind all of this. Less charges- yeah right. Fuel tax going to be dropped? Landing fees abolished? AirServices going to stop paying a dividend to the govt?
Want to envigorate aviation in oz? Fix the charging system. The airways system aint broke. GA operators are. AOPA might have more cred if they shot at the right targets.