Through checking of bags is one big problem QF and JQ need to solve. It was reported in the media that the Nth Qld Cowboys rugby league side was pressuring the NRL to allow them to use another carrier as they were being forced each time they had to play away to get Jetstar to BN then a connecting QF flight from there. The club was very upset about the length of transits they have to plan in order to collect bags and recheck.
However, its not just them who are complaining. A mining executive for a very large corporate client of QF's the other day was making a huge complaint about the same problems probably going to be the reason they change their account from QF/Jetstar very soon as soon as it expires.
Until they can at least do this, it seems the competition is the big winner.