I find that there are too many "priority baggages" out there because of todays' growing numbers of elite tier members. Now with Star alliance, any elite members from those airlines can receive a "priority tag". It's not that hard nowadays to achieve elite status which offer baggage priority handling, and as a result, there are way too many bags that have to be handle with priority. My experience from YVR-HKG is that it's not unnatural to wait for 10-15 min until ALL the priority baggages comes out, thus, whether you can REALLY pick up quick is matter of luck.
I think the industry should classify between levels of "priority". On JAL, there are 2 levels of priority, first class, business class. I think at least top tier members and actual business class passengers should be picking up their baggages before the Elite who travels on discounted Y.
cheers*