The oligarchical aspect of the Republic be utilized to prevent mob rule. There is an interesting term "pneumocracy". There are those who suggested that pneumocracy was intended to be part of the Republican system. I beileve the notion of pneumocracy (spiritocracy) from Michael Williams' book (link below) is that the members of the society would all be led by the spirit of God for the society to work.
Related: Silenced in the Schoolhouse: How Biblical Illiteracy in Our Schools Is Destroying America