If your SAC is asking for an 'evaluation of the legal system' - you should discuss the strengths and weaknesses of the adversary system, which is used in Australia. Discuss the strengths and weaknesses of: the role of the judge, the role of the parties, the role of legal representation and the strict rules of evidence and procedure. I'm assuming that's what your SAC is essentially asking.
It might also be worth mentioning possible reforms to the adversary system from the inquisitorial system such as: for the judge to adopt a more active role in the proceedings of a case (i.e. question witnesses, decide what witnesses to call up and determine the admissibility of evidence etc.). Another possible reform is to adopt the use of written statements from witnesses, rather than just rely on oral statements given in court. Both these reforms ensure for a more timely resolution of disputes. Try to link your reforms to elements of an effective legal system. Good luck for your SAC.