Just a quick question, if there would be a rule change requiring 1500 hrs before flying the "big jets", what would be a big jet what would they fly before that? Good luck finding a job where you fly something other than a jet in Europe (or Asia/Middle East for that matter) and would that not just move the problem by obliterating the T&C at the rather rare job opportunities where they fly something other than a "big jet"?
Good selection and training is where good pilots are found and formed, not on GA fields with a banner on their ass. (which does not say they can't be good pilots, just that it does not solely determine it).