Methinks you need to brush up on AIP GEN 3.4-13 4.4.1
I use Jepps fuji and the relevant section is State Rules and Procedures Australia communication Sect 6 RADIOTELEPHONY PROCEDURES sub section 6.3 READBACK REQUIREMENTS 6.3.1, very specific about what is required as a readback. An expectation of a clearance is not required to be read back so an expectation of an approach does not require a full readback. You just acknowledge with your callsign. Any other instruction that does not require a readback only requires your callsign as I stated previously. "Cancel speed requirement if desired" is not a clearance so does not need to be readback. "Cancel all speed requirements maintain maximum speed above and below one zero thousand" is a clearance so therefore needs to be readback. Its not that hard but for a lot of pilots operating in Australia it seems to be beyond their ability to understand.
