The only way you could satisfy today's post Hadden Cave airworthiness requirements is to start with a modern design not one that started out life on a 1940's drawing board.
I might have the wrong end of the stick here but surely the point is that the pre and post Haddon Cave requirements need not have changed. It was the implementation that was wrong, not the regulations. But the MAA has started rewriting the regulations for no apparent reason. People now infer the poor regulations were to blame, not those who ignored them. In other words, the MAA exists to help some senior people cover their arses. I still think this summary has got it pretty much right.
https://sites.google.com/site/milita...-authority-maa