Kitbag,
Apologies if I have interpreted your post incorrectly, but are you saying pilots cannot be promoted if they hold a MES lower than A2G2Z1? So all those flying on an A3 med cat with certain caveats ('as or with co-pilot' / 'no ejection seats' etc) can't be promoted? Interested as could be relevant to my own career at some point in the future!
Cheers