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In the U.S. at least, due process is considered a right that is so important that it is guaranteed by the Bill of Rights.
Due process balances the power of law of the land and protects the individual person from it. When a government harms a person without following the exact course of the law, this constitutes a due process violation, which offends the rule of law.
It is important that the Stack Exchange network ensure that there is a due process for appealing all moderator actions on every Stack Exchange site. The federal powers of the SEN reign supreme over the individuals statehoods of the individual SE sites. The SEN must enable due process to appeal the unfair timed bans on individual SE sites because an appeal is not possible when a person is banned. There is no way for a banned user to post a meta question or to request an appeal in any way on the site that banned him.
Due Process is not something limited to huge governments, nations, or courtrooms. It is what is simply the standardization of a system of conflict resolution. This standardization helps to prevent abuse by individuals entrusted with authority.
You have heard the saying 'power corrupts--absolute power corrupts absolutely.' People who enjoy abusing other people tend to seek out positions of authority. No, we cannot legislate morality, but in the immortal words of Martin Luther King, “Morality cannot be legislated, but behavior can be regulated. Judicial decrees may not change the heart, but they can restrain the heartless.”
The utility of internal organizational systems of conflict resolution, or “due process,” rests on the formulation of specific objectives and values, a high degree of decision-maker independence, balanced formality of procedures, and matching types of conflict with means of resolution.
Please incorporate this new feature. Do it for MLK. Do it for the dream.