What tends to be absurd, is the necessity for local Licence holders to need to jump through more regulatory hoops for check and training roles, than imported Licence holders.
Perhaps Part 61 was designed to allow everyone other than Local Licence holders to have portability of qualifications.
The common theme here is the lack of local development and training. Cadet programs are being used for nothing more than political leverage.
The importation of these “457’s” pilots should be compelled to serve 4-6 years in GA backfilling the void being left in the bush. Then, after having contributed to the grass roots communities, would the visa holder be more likely to be welcomed into the fruits of Australian living.
This is is a little like what the doctors are required to do if imported.