I have to agree with the discussion here, and it is going to be hard to stop unlicensed work. In Australia you have always needed an electrical license to do wiring even technically to change a plug top.
The thing is people still do their own work and leave traps for the next poor unsuspecting person. We have just moved town and the house we bought has DIY electrical work, I was under the house cabling computer networks, when I saw electrical connections exposed, not nice when you have kids who play under the house.
I hope one day they at least bring back inspections when properties change hands.
