Seagull201,
JAA is long since extinct, and the whole policy base of the current EASA has turned much of the JAA approach on its head.
For example:
(1) EASA's approach to regulation is outcome based, not JAA prescriptive.
(2) The current head of EASA has shut down the rule-making branch, on the basis of: "if you hire a body of people to write rules, that is exactly what they will do, to justify their existence".
If you have any doubt about (2) just look at CASA.
Don't know anyone in the JAA member states that has a MPL?
The very first MPLs issued were by one of the Scandinavian states, very closely followed by CAAC. I can't remember the name of the airline, but I do recall that they commented that MPL trained pilots were better prepared for initial line operations as F/Os than conventional intake pilots.
Tootle pip!!