From what I've read sounds like a bit of a storm in a D cup. In the end it's up to the engineer you use, no two have the same interpretation. If an engineer signs off on your car and something doesn't meet RTA standards it's on their head, not yours. I think where the system falls down is the blokes that get their car engineered then make blatantly stupid changes like BOVs and pod filters after the fact. It's always the one or two dickheads that ruin it for everyone else.

To me that PDF is just outlining some proposed name changes and pointing out rules that have been in existence for some time, a little gee up to show the general public that the Govt is doing something. Like has already been said, the Govt doesn't want to kill off engineers or the after market part industry.