So, I do not think there is a rule that dictates when to adopt what Government(or any other) Civic, except for what your specific needs are at the time.
That's crazy! You must run really small empires. Anything larger than 6 or so cities is a huge burden without Aristocracy or City States. And you can forget about conquest. If I can't keep my research rate at 80% or above, I consider that a failing economy.
EDIT: I do not see how 80% research can help you when you need loads of troops to defend/counterattack against an opponent when at war...
This is a smidgen OT, but unless you're playing elves, why in the world would you want research at 80% post Mathematics? Nab yourself the Great Library, run lots of sages, then turn that slider down to 0-20% and exploit the heck out of the ridiculous happy bonuses from Gambling Houses. Toss in Scholarship later on and I really do think this blows the doors off most cottage-based economies.
I don't normally need loads of troops to fight wars when playing against the AI because I usually have a tech lead and prefer fewer advanced and highly experienced troops to a huge stack of weak cannon fodder. The high research rate means I keep that edge.
I normally don't lose many troops. So by mid to late game, my main stack is unstoppable for the most part.
I still have no idea how you manage to keep GK with 18 cities. Even with both palaces. It doesn't even make much sense. With 18 cities, your capital is such a small part that the 50% bonuses dont' amount to much. What's so great about God King that you'd want to keep it?
What civics are being used alongside GK to run an awesome empire? Religious? etc. Any state religions? Any combos civics that matter?
I really don't like aristocracy. Food is too important to me.
Food is too important to me.
I prefer to have a minimal amount of farming
How do I exploit the happy faces? (can't say I ever thought that sentence would ever come out of my keyboard).
Doesn't the Great Library only allow sages in the capital? What about the rest of the empire? Don't I need guilds before I can run sages elsewhere?
What of Aristo/Agrairian combo? --- he says as we stray OT.
The obvious way to offset the food loss of Aristocracy is to also go Agrarian. But maybe that is a given. Problem is that Aristocracy kind of forces you to keep using Agrarian. So I usually feel rather "stuck" with Aristocracy. I, personally, don't go aristocracy at all unless I am running a Financial leader. It is easy Commerce from teh beginning. Otherwise I depend on cottages and City States. I'm a fan of City States. The maint. reductions are just too good to pass up. Plus keeping Agrarian isn't important. I have more freedom with that civic category.
Running God King, the optimal choice would be to build the Great Library in another city than your capitol, then focusing on sages in all cities (councils, libraries, alchemy labs) while focusing on merchants (with apropriate buildings) and perhaps priests in the capitol. Is this correct?