Reference to this statement :
BUT focussing solely on the PIC hours "outside of the 'school" does anyone else (ie, CASA, examiner) set an expectation that you should expect to do ... X hours, or X flights, or X landings as a solo / pilot-in-charge before you can sit the test?
There are 2 gates you must pass to obtain a licence, Gate 1 your must be recommended for the test by the Head of operations of a flight school (HOO) Gate 2 you must pass the flight test with an examiner. Think of the examiner as a medical specialist, you cannot see that specialist without a referral from a GP in this case the HOO. So therefore you must complete the solo hours predicated by the flight school and its syllabus to get the referral to the flight examiner.
as for below, again its 2 different statements that your confused with.
Statement 1 the flight school must supply a syllabus.......correct
Statement 2 they Can supply the CASA standard syllabus, or they can write their own syllabus different from the standard one and have it approved by casa.
Also, your first two sentences actually seem to contradict each other just a little. You can't "MUST supply a syllabus" and then in the second sentence "CAN ... if they wish to do so" ... which is it ? This is a really confusing bet each way isn't it or what am I missing ] (Or maybe what you're saying is the school must submit a syllabus, which can/is usually the standard syllabus without change, which should obviously get approved because it is the standard CASA syllabus, ... but then if they want, they can tweak/change/better/reduce that syllabus and submit "their own schools version" for scrutiny/approval if they want) [which in this context may/may not involve more/less PIC solo hours].
My best advice here is that you select a flight school, and discuss your options with the HOO to gain the qualifications that you want. As stated previously the definitive answer you are chasing doesn't exist.
CASA has in information page located at this link otherwise google CASA commercial pilots licence.
www.casa.gov.au/licences-and-certificate...mmercialpilotlicence