The Jetstar brand does well on leisure markets so I doubt they will close the base,
Really? Why wouldn't they close the base especially with the optimiser and the number of crew already overnighting in Perth. Not sure how long you have been in Jetstar EAC so you may not remember the closure of HB, ADL and DRW. If they think they can save $1 by closing the base then it will happen in the blink of an eye. The first warning PTH crew will get will be a visit by the CP and HR.