Those who are talking about a means of controlling the pilot supply are on the right track.
If ALPA had to give it's approval, just like when a lawyer has to pass their boards, we could eliminate the 6-month-to-cockpit schools.
ALPA could demand high levels of knowledge and skill, set the bar for simulator performance, or WHATEVER.
The real question will be whether pilot groups want to expend any of their negotiating capital on such initiatives.
Most of the time MECs are either in a recssion where they have to focus on keeping what they have, or in an economic upturn where they are focused on improving the contract.
It might be very difficult for this more abstract idea to gain enough support to direct resources at it.