The Chronicle of Higher Education summarizes this dispute with respect to transparency of ethics opinions. William Simon has written that ethics opinions should be publicly available and scrutinized just like another academic article. This proposition has been vigorously opposed by those who are in the business of preparing such opinions. The Chronicle article summarizes the dispute nicely.
Simon is one of the legal ethicists who is predisposed toward protection of the public interest and social concerns. For him, ethics is less about protecting the legal profession and more about ensuring the that profession looks after the public interest and achieves social good. When various rules of ethics conflict with the achievement of the public good then those rules should be modified to bring the good about.
I continue to wonder whether fewer lawyers would leave the profession if it focused on the achievement of justice and the public good
I also wonder whether the Canadian Bar Association, which is essentially a lobby association for lawyers and exists to promote the interests of lawyers, should be drafting codes of conduct for lawyers or opining on what constitutes a conflict of interest. It is similar to the fox guarding the henhouse.