The form of government should follow the function of government. The question should be, what is the highest order purpose of government in the democratic republic under the US Consitution?
In my books, How to Select and American President by James A. George with James A. Rodger (c) 2107 Archway Publishing and Smart Data, Enterprise Performance Optimization Strategy (c) 2010 Wiley Publishing, I proposed this:
Purpose of the American Government
Optimize the return on national resources through collaboration among individuals and public and private enterprises.
Government creates the optimal environment in which these entities can thrive to create a good life for all in the absence of poverty on individual merit and with consideration for those who are disabled or unable.
Private enterprise creates wealth from which government enterprise operates in proportion.
Citizen needs and demands are the drivers which are constrained by economics and laws and regulations that ensure economic, social, and environmental responsibility in balance.
Comprehending the meaning of this is worthy of much discussion because this analyst believes that most people are clueless about it.