I think that's a great solution. I also wonder if there should be a parameter on the size of support animals, such as the size limitations of bringing your pets on a flights; dogs would have to be limited in size in the same manner, that they fit in a carrier under the seat in front of you; of course, support animals would be allowed to be in that person's lap, but then you avoid a large dog trying to fit in a space that is too small for the animal. I also read an article where someone suggested requiring support animals be muzzled. There are ways around it. As I said, I do know people who just want to bring their dogs everywhere with them and get the certification so they can. I find that level of entitlement so disrespectful to those who have true needs.