simple option that FREEZES nominals

one of the most frequent complaints is about changing nominals. There have been many different things listed to reduce that having to do with F5 settings and how Alignments are created etc, amounting to many things to seek and tie them down so they dont change. Perhaps pcdmis authors consider this a 'feature' but most users consider it the bain of their existence. It makes them HATE using pcdmis. Why not have 1 simple parameter the user can set that permanently locks the nominals of features and moves etc so that they can not change?