I'm sure the unions will do all the can to fight the MCL, but who knows how effective it'll be. Age 65 did work its way to the US, most likely fueled by congressmen's fear of a looming pilot shortage disrupting air traffic, and causing tickets to go higher than $150 coast-coast. Depending on the mood of the time, the same fear might creep back in, and begin a large push for this "fix everything" pilot license, but only time will tell....

As far as the JET U types, i'd have to say they have quite a bit invested in the job. Granted, none of it is in years of real world experience, but, they've invested thousands and thousands of dollars towards training which would be absolutely useless and wasted if they don't continue to fly. Unlike a nice bachelors degree from a regular university, this type of training will only be geared towards one thing, and one thing alone, so i bet they'll do their best to stay in the industry, will they work for pennies...yeh, but so far, we all have too.