This is the place to post general stuff concerning the game. Want to express your love for hoplites or find people to play the game with? Want to share your stories about matches you have played or discuss historical connections to the game? These and any other topics which are related to the game, but don't have their own forums belong in this forum.
Do you have any questions about modifying the game? What will you need to do what you want to? What are the best techniques? Discuss Modifications, Map Making, AI scripting and Random Map Scripting here.
Forums for decision-making on issues where a consensus can't be reached or isn't sufficient. The committees are chosen from among the official team members, but to ensure an open and transparent decision process it's publically viewable.
@wowgetoffyourcellphone i'm sorry for the late response, i was just avoiding to answer as i didn't know how to answer you and to be honest i still don't. I assume the depicting period is around 500 BC, according to what wikipedia says about the Archaic Acropolis https://en.wikipedia.org/wiki/Acropolis_of_Athens#Archaic_Acropolis
Well you could make a tech that upgrades every unit ^^ I'm not sure you can update specific props that way, and we don't handle promotions using variants so I don't think you can do it exactly like you intend and like it was done in other games ie AOM. now as @leper said having the documentation updated would help answering.