@Tom Immrich
Do you agree ( as i'm sur that you know) that not all MDA 's of the multitudes of approaches can be converted to an DA without adding some aircraft performance dependent safety margin, and that not all operators are qualified to do so and not all air transport aircraft are equipped to do so.?
Some people here (and i'm afraid to say you as well) are making others believe that anybody in any airplane at any place can use the MDA of an NPA approach as an DA and thus being allowed to drop below the DA on go around, when commencing this NPA approach doing a CDA and thus behaviour being wise and legal.
It would be wiser in the sense of safety to publish the provisions to be made and the regulations implemented as well as the prerequisites the aircraft, the approach and the operator has to fullfill to make the use of the MDA as a DA not only legal but also wise in the sense of safety.