The more I think about this, the more I feel we need a much larger tech tree, and one that isn't so rigid (ie need more OR requirements). I'd like to see them essentially have 3-4 main "paths" that you go down based on your start, with multiple ways to reach certain points. The key to that is making sure that there are units along each path - too often I've wanted to beeline one path but you can't afford to ignore the military.
I'd almost rather see a system where the base units come along based on ages. So you reach the medieval period and that unlocks Knights, no matter which path you took to make it there. Maybe the "specialized" longswordsmen can come from one specific path, but if done this way you won't necessarily need to backfill all the mining techs to stay up to date in military, for example.
I'd almost rather see a system where the base units come along based on ages. So you reach the medieval period and that unlocks Knights, no matter which path you took to make it there. Maybe the "specialized" longswordsmen can come from one specific path, but if done this way you won't necessarily need to backfill all the mining techs to stay up to date in military, for example.