My answer to this is that if there was a significant need in this area, the Canadian Transportation Agency would have contacted the carriers and would have made recommendations to us.
I have personally worked for an air carrier for 10 years and I have seen over the years an improvement in the services offered to passengers who have accessibility problems. We have been faced with new standards, new requirements and we have put in place some measures in order to help individuals who have difficulties in this regard. So I fail to see why this tool could not be used in order to solve different problems.