re: the speaman upgrade path. having spearmen upgrade to heavy spearmen creates some problems. first, the Seleucids will upgrade all their spearmen on the first turn and then be broke and their units go on strike and they collapse. second, Pontus and Axum can't build their UU after discovering Military Drill. Gojoseon might get a unique spearman as well. while Im on this sort of topic, I've tried to have every civ be able to build its UU at spawn. Qin is, I think, the only exception right now, but I was actually thinking of starting them with Military Drill instead of Construction. that way they would build the Terracotta Army first and the Great Wall second, which would lead to a nicer graphic when its fixed (don't know why its not working, haven't looked at it in ages). I don't really think upgrading units for money even really fits the era. military tech changes slowly in this mod.