The scale of penalties is far too compressed.
My biggest issue with the penalties as they stand here in NSW is the relative harshness of the bottom end and the relative leniency of the top end.
12 months for a Bute overage, 5 years for the presence of EPO. That is a scale that is way, waaaaay too compressed. 3 months at the bottom end and 10 years at the top end would, for mine, represent justice.
I don't know exactly how the present spread of penaties were arrived at but there's one thing that appears certain. Not a whole lot of thought was given to them insofar as the comparitive seriousness of offences are concerned.