It came close in around 2017, I was at a meeting were some very senior managers said that Joyce wanted Group Seniority to address retention of pilots. The proposal was a Group List where you are ranked on your date of joining, whenever ANY entity needed to recruit then the positions would be advertised internally and allocated via the Group Seniority number.
I'm fairly certain that the current AIPA President has been advocating a Group Seniority list for a while. If they were Jetstar Senior Managers then you were being lied to. How do I know? Their lips would have been moving. Joyce's solution to the impending pilot shortage was to establish a self-funded cadet scheme at Toowoomba.