Michael was a very very very successful Don, both politically and economically. His problems generally arose from his underlying disdain for criminal activity, and the damage that he did to his own 'soul' as a result. Vito never questioned the morals of his business, whereas Michael always knew that it was 'wrong'. He destroyed himself by doing it anyway. So yes, for the Family he was good. For his family, his psyche led him to insulate himself from them.