There are provinces that are currently doing it with great success. I also agree that Mr. Friedman makes a great point, that if you can challenge the array based on an absence of representativeness, that would hold the provincial government's feet to the fire.
I think the concern is still the kind of foot-dragging potentially. The provincial governments have known for 30 years that the current mechanisms are flawed. I hope that this would speed things up. It's a terrific suggestion, one of Professor Roach's suggestions. It's actually a really easy fix.