Adding a political system

[Bled]

You miss the point of what checks and balances are supposed to do, which are to limit an individual's power, which means the individual is going to get bored.

It would be difficult to work into the lore. We already have 3 grand company leaders representing each of the 3 available city states. We are grouped up to fight against the Garlean Empire. Why would we split up by dethroning the Grand Company leaders we just got or start new political empires when we're about to get crushed by an outside power + a mysterious other power?

Checks and Balances limits the powers of three governing bodies not just one individual. The whole point of checks and balances was to separate power into three distinct branches that would fight over power them selves in turn checking each other regularly (much like how nuclear proliferation, same theoretical approach). The founding fathers emphasized separation of power so much to limit the probability and longevity of a dictator.

And lore wise the grand companies are nothing more then militias set up to defend the greater good in times of strife, i don't see what they have to do with the governance of each city state. the "political system" would not change grand companies, and grand companies would not change the politics.