It is no surprise that lawyers want to keep preliminary inquiries.  The legal profession and the Courts have nothing to do with justice or fairness. They are only concerned with the application of the law, which has become so convoluted and complicated that lawyers are essentially arguing over how many defendants can dance on the head of a pin. Lawyers are not equipped to break free of the suffocating cocoon they have spun for themselves. 
We need a complete overhaul of the justice system, with a royal commission composed entirely of laypeople, with  lawyers acting only as a source of information. Lawyers do not have a monopoly on deciding what is "fair"  to defendants. That is up to society to decide.