I like the changes you made to building adjacencies but the way you raised the cost of techs/civics isn't balanced. I get your reasoning is that you need to raise costs because the adjacency changes you made are too strong, but you actually removed the mountain adjacency from monuments which means that it's much harder to get culture generation in antiquity than it is in the base game, which means that every civic takes 20 turns to research and by the time I finish out the era I still haven't researched code of laws