I have an Aussie ATPL, and a British Passport, and considered Gaining a JAA ATPL for one day I might like to work over there. After finding out the Cost and BS involved with doing it. Not interested.
A mate of mine is a highly experienced (43 years) heavy jet engineer with extensive B777 experience (In Australia). Everything is good until one day they start going on about him not having a "B1" rating on his licence, (after they start transitioning to a euro type licencing system) and therefore not qualified to sign off on some AC.
If thats the way they see it, why does CASA allow JAA/FAA holders to come in and do 2 small exams, pay a few $$ and essentially get handed an ATPL.