Success of MPL pilot depends on talent spotting, quality of training imparted and the type of aircraft they are trained for. Airbus FBW being flight path stable is easier to handle than non FBW aircraft. They will benefit with good in depth training of automation and procedures. AF447 and QZ8501 happened more because lack of adequate knowledge of alternate law and stall recovery procedure and not because handling in alternate law is difficult. Many accidents are caused by experienced people. Now Airbus and B787(I think) unreliable speed poses no difficulty as it automated. Automation and MPL is here to stay.