I have posed the exact same question here a couple of times. I think I know what Pierre is getting at. As much as I would love to have such a system enacted (what L3 instructor wouldn't?), it is not in the ski school's best interest. Look at our ski school. We have about a half dozen L3 instructors. I know, for damn sure, that the people that live in this area would pay an extra $5-$15 for a level 3 cert instructor, if they were told what the cert levels meant. Just look at how many Lexus, Range Rovers, Hummers, Benzes, Navigators, etc. are in our parking lot. Now imagine our SS Dir having to hang out at the ski school desk and do damage control when the people are told something like "I'm sorry, but we only have 3 level 3 cert instructors here today", and the people walk away.
Sure, it would increase demand for certs, and people would pay more, and we might be able to make a living at it, and over time, the system would work. But SAM (ski area mgt) is way too short sited to deal with that.
Let's face it, if SAM was actually willing to pay the price for a bright future, they would pay us a living wage and charge almost nothing for the lessons (take it as a loss-leader). Then, in a few years, they may actually see the number of skier visits actually keep up with population growth, and the industry would be able to thrive a bit more. As it is, they are so short sited, that they are willing to send out 25 never-evers with a $5/hr instructor that has a total of 3 hours of teaching experience. They just see the $700 in profit they'll make in the next 90 minutes.