I love the tiered licencing system. For vehicles we have it too.BTW, I am probably one of the few Americans who likes the tiered license system for bikes. I also believe it should be done for class (size) of cars and pick up trucks.
Learners > Provisional 1 > Provisional 2 > Full Opens
They each have their own stipulations / amount of passengers, type of engine (4cyl, turbo, v8 e.t.c.).
I know that the motorcycle test to get your learners here in QLD is now 30 questions too, instead of the previous 5 it used to be.