Joyce isn't leaving - he will be the next QF CEO. If he were leaving, he would have taken the Aer Lingus job when it was offered to him. Personally I am a fan and hope he gets it. He knows all areas of the airline and is a smart operator. Working with JQ, he had to get costs down. With QF, he won't have to do that. His track record with JQ speaks for itself.
If one of the three is picked, what makes you think anything will be different? I think you will find they will all continue the plan set in place by Dixon.
I would prefer him to Gregg, who will just slash and burn everything. I like Borghetti and wouldn't mind if he gets the gig.