After consulting with people who know what the hell they are doing I have come up with the following structure:
Dark Lord
The Dark Lord is the equivalent to the Head of State. They are the central figure around whom all people of the One Sith rally and from whom all power and national pride stem. They have absolute authority on all matters within the One Sith and the government exists by their will alone.
Under the new structure, the Dark Lord will be referred to as the Emperor in relation to the government and in public speeches/decrees/etc. He shall only be referred to as the Dark Lord in private by those authorized to do so.
THE EXECUTIVE BRANCH
The Executive Branch is the group of the highest ranking members of the One Sith. They rule at the federal level of the OS directly, including supervision of the military, and enforcement of all OS laws. The Eye and the Wrath are arguably the co-heads of government, one acting as more of a spiritual interpreter and the other as the enforcer of the Dark Lord's will. These two are near equal in power, but the wishes of the Emperor keeps them united in purpose.
The Eye of the Dark Lord is direct conduit through which the wishes of the Dark Lord are conveyed. She is the equivalent of the spiritual leader of the One Sith, speaking on behalf of the Dark Lord and directing the faction as his highest ranking lieutenant. She speaks and acts with the full authority of the Dark Lord himself.
The Wrath of the Dark Lord is the Commander-in-Chief of the One Sith and his actions are seen as the enforcement of the Dark Lord's wishes, beyond reproach. Though he does not speak directly for the Dark Lord the way the Eye does, he is empowered by virtue of his position to speak with the full authority of the Dark Lord himself.
The Imperial Privy Council
Leader(s): The Emperor (co-Eye and Wrath)
Membership: 1 Hand, 1 Voice, Highest Ranked Sith Lords, the Speaker of His Will (non-voting)
The Imperial Privy Council's only purpose is to advise the Emperor. They have no formal power or authority whatsover unless the Eye/Wrath ask them to vote on matters to decide their outcome.
The highest ranking Sith Lords are decided by the Eye/Wrath. The Voice and Hand member are selected by their own members. The Speaker, who is essentially the messenger of the Privy Council is elected by the Will.
THE MILITARY (aka. the executive branch... adjacent)
The Military falls under the guidance of the Wrath and the Executive Branch as a whole, but they are big and complicated and thus should have their own section.
The War Council
Leader(s): The Wrath
Membership: The Hands, Military Politicians, and High Ranking Generals etc.
The War Council is the body of the military/executive charged with coordinating the efforts of the military under the direction of the Wrath.
THE JUDICIAL BRANCH/UPPER HOUSE
The Judicial Branch is dominated by the power of the Voices and the Sith Lords who make-up a semi-legislative 'upper house.' They are purely non-political in theory and act only in the interest of keeping the One Sith true to the ideals of the Sith. They have the power to make laws but rarely do so. Most of their power is in casting down laws that contradict the Sith way.
The Voices of the Dark Lord rule the sectors of the One Sith and are, collectively, the equivalent of a Supreme Court. They have both collective and individual powers that give them oversight of the faction.
- As a collective they can: hear appeals, invalidate laws, make decrees concerning the purity of Sith ideals, remove planetary leaders from power, discipline Sith Lords, and direct the operations of the One Sith bureaucratic agencies.
- As individuals they can: sit in judgement of any dispute in their sector, invalidate planetary laws in their sector, discipline planetary leaders in their sector, and enforce laws within their sector.
The Mouth of the Dark Lord/Emperor
Leader(s): The Five Voices (Only one voice at a time on rotation)
Membership: All Sith Lords
The Mouth of the Dark Lord is the upper house of the legislative and also the primary body of the judiciary. They are presided over by one of the five voices on a rotation and may make any laws pertaining to keeping the One Sith pure to the ways of the Sith. They may also collectively vote to invalidate any law passed by the lower house. They are so named the Mouth because they speak for the Emperor as a collective and the Voices are so named because they enforce the policies passed here.
Individually, the Sith Lords are empowered to act as enforcers of the laws and ways of the Sith at a minor level. They may pass judgement in local disputes and punish those found to be in violation of the will of the Emperor. In effect the Sith Lords become Magistrates.
THE LEGISLATIVE BRANCH/LOWER HOUSE
The Legislative Branch is dominated by the body known as the Will of the Emperor which is comprised of all planetary governors who convene to create laws for the One Sith. They do not have as much freedom as other legislative bodies such as the Galactic Senate, but they are much freer to govern than the Imperial Senate of old.
They have legitimate power both individually, to rule their planets as they see fit and collectively, to make any new laws within the constraints of the Emperor's wishes. The one power they have that does not have oversight from any other body except the Emperor himself is the power to direct the collection of taxes and decide how funds are allocated.
The Speaker of His Will
The Speaker is elected from among the members of the Will to serve as the neutral chairperson of the legislative body. They are similar in every way to the UK Speaker of the House of Commons (look it up if you have questions.) In addition, they convey the Will of the Emperor to the other branches of the faction's government and sit on the ruling council. They are also the messenger of the One Sith, with no power of their own to negotiate, they are often sent by the Eye, Wrath and Emperor himself to relay messages to enemies and allies alike
The Will of the Emperor
Leader(s): The Speaker
Membership: The Executors (Planetary Governors)
The Will of the Emperor is the chief law making body of the One Sith and is comprised of representatives called the Executors of the Emperor's Will. These representatives are either elected or appointed to be the rulers of each One Sith Planet (provincial governors) and have the power to rule said planet as they see fit under the purview of the Voices. Collectively, they meet on Coruscant and have the body to enact laws the effect the entire faction. They are so named the Will because in theory the laws they enact reflect the wishes of the Emperor (in practice the wishes of the Emperor are enforced primarily by other branches.)
Note For OOC:
This has all primarily been written for the purpose of story writing, as we all know how much us Sith loooove handwaving *snort* so I covered every conceivable base.
In practice, things would go on the way they have been with the exception of a new thing for Sith Lords to do and a Senate-like structure to add political intrigue. Also supplimenting the request by Faction Members for a war council and public ruling council.