I argue that there is little difference with the end result.
To get the "endorsement" under the old system, one would have to have got their PPL which would have entailed getting a medical, passing the exam, plus a nav or two into controlled airspace, then the flight test.
Under the proposed system the pilot would have had to get a medical, do a few navs into CTA and sit the test to obtain the endorsement.
If RAA training is as far advanced as those on here and other forums endeavour to lead the GA fraternity to believe, the difference at best might be a few hours and a little bit of extra study.
Perhaps up to $1,000 extra considering the flight time is only slightly more expensive and you've got a lifetime ticket to drive the big stuff if you really want to go somewhere with your Mrs and kids.
Have a look at this, it is a rough guide that shows how it's not that hard after all:
http://www.rvac.com.au/files/flighttrainningstepsv3.pdf
The only error I can see is that the PPL exam should be over to the right hand side to the right of the dotted line coming down from RA Cross Country Endorsement.