Your Cadet scheme is merely for Gen Y who are too farrrking lazy to actually go and earn their career, OR, for older guys/girls who may not have the option to go out bush because of family (no problem with that, I completely understand).
If you think those who are selected for cadetships are "lazy" then you haven't got a clue. Anyone of the 12 or so people that are selected out of 200-500 applicants are selected due to the fact that they were seen to have the right skills and aptitude, and also done well in year 12, something that isn't an achievement of 'lazy' people.
I could just as equally say someone who didnt put in any effort, didn't make it into the cadetship and is now having to go down the GA path is lazy, but I won't. Everyone is different, and it's ignorant to make these types of sweeping statements.