Respecting the various modes of engineering practice, there is always the need "to keep upwith your field", or in fact  to get ahead.  In addition to the reputation of a professional engineer, the practitioner is always subject  to regulation and review by the licensing board.  Given these 'truths', it follows that all professional engineers will undertake some form of continuing education, improving practive ability.  I, therefore, favor the proposed regulatory concept, and about time, too.    One caveat, however; because of the diversity of engineering practice, there must be a diverse, yet certifiable, means of meeting the contiuing education requirements.