Thanks guys, but its all wind at the moment as I haven't thought it through and lack the modding skill to do anything about it.

Quote Originally Posted by strategos alexandros
It means they thought of their king as a god, like the Arverni and ancient Egyptians did. Aedui would possibly be a democracy as well.
Several monarchies had 'god-kings" but I'm thinking more of societies where the administration is in the hands of the priests, rather than the priesthoods in the hands of the administration.

Babylon or Minoan Crete prior to our period, Egypt and possibly parts of India had a society where big temples acted as administrative units, landlords, meted out justice etc.

In Rome or Athens leading men became priests and it was a source of prestige, but not a seat of power.

In order to represent the contrasting/conflicting political styles of Averni, Casse and Aedui you could have the British as tribal, the Aedui as a republic or an oligarchy, and the Averni as a monarchy. I know the Averni was an elective monarchy, but this is more about representing tendencies than absolute systems.

You'd need to pick and assign the styles appropriately. Its cute to have tension between Sparta and Athens, but silly if Athens revolts to the Carthaginians (for example).