Gundek suggested I lay out my thinking regarding Mormonism as a system of positive laws. Here goes:
The LDS Church is structured in the doctrine of unity. To them, Christ himself decreed: “Be one; and if ye are not one ye are not mine” (D&C 38:27.) This command is still at the very root of the way the Church is run today. This unity is also at the heart of the project of the Church, which is to bring about Zion. To the LDS, the concept of Zion was simply defined by Jehovah who applied that name to the city established by the antediluvian Enoch “because they were of one heart and one mind, and dwelt in righteousness; and there was no poor among them.” (Moses 7:18.) Zion is a sort of heaven on earth, so much so that, in theory, when people approach Zion in practice, they are translated, i.e. taken to heaven to await the final establishment of Zion.
Unity of heart and mind is generally considered a celestial standard by the LDS, which generally means that it is part of the higher law, the political goal striven for in this life, but ultimately reached after the Second Coming of Christ. In theory, the Church was designed as the human vehicle for establishment of Zion on earth. As a Mormon, I saw most of the law throughout Biblical and LDS church as human groping with the Spirit to form a Zion society. The law differed from time-to-time based on what was needed to move toward Zion. The differences were based what the culture and temperament of the people that followed God could sustain. The doctrines and practices are contingent and transitory steps to produce Zion rather than dogmatic principles of theology.
What this has meant, in practice, is that the political unity of the Church is the paramount priority over the perfection of its theology or practice. Getting the right answer on they way the church has run is less important than getting behind the leadership. Most theological questions are intentionally left unanswered. In rough terms, this is a system where the policy of the Church is considered correct, not because of its intellectual justification, but fact that the First Presidency, the Quorum of the Twelve, and the Membership have ratified it. The ultimate basis for the authority of the ratification comes from the conscience of the Church as it listens to the spirit. Thus, apostasy has little to do with theology or even argument, but a rejection of the structure that controls the ordinances of the Gospel.
In this way, most of the policies of the church are properly considered posited– i.e. not directly derived from scripture, reason, or nature but established by proposition by the leadership and ratification by the membership. Unlike with Protestantism, Church doctrine and practice is not derived by interpretation of scripture through some hermeneutic principle. Church doctrine, including the content of Church covenants, is dependent on institutional facts, not the merits of a particular scriptural interpretation or philosophical argument. This view was helpful to me as a Mormon in explaining the sweeping changes that have been made in the rules and practices and even the ordinances of the Church. It also explains the pragmatic approach taken by the Church in policy over the years.