As Junior has said above, simulators in basic training are the new factor that Australia hasn't had before - I don't know how many we will have or how realistic they'll be, but they certainly may, at least in my opinion, be quite a powerful and cost-effective way to do early screening for seeing who gets a guernsey in the first place and then who goes on from initial to advanced training.
It seems to my admittedly un-simulator-savvy brain (never had much opportunity to get near them in my time), they would be a wonderful tool for putting Bloggsy into various situations and seeing how he/she copes. Add in video recordings of the proceedings, get your psychs and experts crunching the results and surely you have a great measuring tool for predicting how candidates will fare on course. This may be the factor that means 'all through advanced' training actually works this time round.