Maybe the best idea is making Greek a generalist civ next time, focusing on food (cf. colonial wheat production and transportation), production (cf. shipbuilding industry), housing (cf. city planning), and gold (cf. Athenian sliver mines) in order to support military, science, culture, diplomacy, religion, colonization, etc. - since they were good at a lot of things. (cf. the current Rome and Phoenicia design.) As well as more alternative leaders.