agree with posting comments and it really is a shame, however its completely legal . QF group legal team would have def found a loop HOLE somewhere in order to achieve that .
also, JET* also has airbuses reg in SIN
I do know Aussie based cabin managers that work for JET* International , based in Australia. They say that sometimes they turn up at briefing and the entire cabin crew are Thai based crew on really long trips ( 13 days ); and they are at times rostered 3 Bali return trips . OUCH !!!