The Part 66 system should've been introduced 20 years ago, with the introduction of the A320. Let's face it, with the modern fly by wire aircraft, the mechanical guys do need to be on top of the avionics systems. One does need to be aware of the priveleges of the B1 licence though.
What really stinks though, is the cost of restriction removal is around three times that of getting the equivilant in SIN and I believe was set up in Australia to be a cash cow for certain aviation colleges. Then we wonder why there is a unfettered use of 457 Visas....