Agreed the PC9 is not a good advanced trainer. Unpressurized, unjet-like performance, heaps of yaw on any power application, poorly harmonized controls with high control forces to satisfy FAR regulations, bumpy lowspeed wing, poor sitting posture..list goes on. Energy management is just not a consideration like a true jet. As an advanced trainer, the MB326 was far superior despite it's aged design.
The RAAF really need a jet trainer with jet characteristics. In future only some transport aircraft will be prop-driven, and it will take much longer for graduates to get to a command level on Wedgetail, C17, Poseidon (737 P3 replacement), VIP types, MRTT (A330 tanker) ...list goes on.
But here we go again...RSAF has bought the PC21, to be based at Pearce and the industrial synergies and politics for buying the PC21 as our PC9 replacement will be overwhelming. The same old story unfolds, like seasprite and PC9, Defence will end up with what the bureaucrats think is a good idea and the repercussions will continue for years to come.