NZER
I take onboard your points but must add airlines are well aware of the vulnerability of Cadet programmes.
The main issue is a very, very basic F/O is the product of your 230ish hour training curriculum. This creates commercial problems in rapidly expanding airlines as Cadets will probably not meet Command Upgrade standards in a short timeframe ( under 5 years )- nor for that matter will basic GA.
I never understood why airlines bother with cadets in our part of the world. Put the pool of ex-military and ex-regionals through tough selection hoops and you have an airline pilot with a positive attitude and good experience to mould into the airlines pilot profile.