I get the idea, but in Antiquity on Deity, crushing an AI into irrelevance is easier said than done. Unless I am lucky enough to snipe their capital while it does not have walls, it is a grind through all the units they spam. Yes, it is doable, but by then the age is pretty much over.
And that way, you will miss out on the culture when you need it most: during the early game. If you just settle for sanctions on one leader for most of the age, you end up with a worse version if Lafayette: similar bonuses, but you have to constantly spend influence to maintain them.