With no population and happiness bonuses AI is 'crippled' with CS buying and VERY vulnerable to pillaging (their) luxuries.
Hey, is there any way you can get like a mod for marathon speed that has all that in it to us?
Wonders I can see a reason, but possibly give the AI a discount on CSs.
(If possible)
Haven't found the ways to modify City States, but in the current test, I find the CS loving AIs such as Alexander, although quite poor, still able to save up and buy City States as they desire - just not that crazily.
I am also afraid that if AI can get CS cheaply, then Alexander would be overpowered since now the players won't have enough gold to buy them back.