The gold/production balance is off. (If I understood it right the low gold costs for buying stuff in the actual version are a bug, not an intended change.) Reasons for this: - When playing with CSD you get CS with production (through diplomats) not gold, removing one of the main features of gold. - Nearly every gold-%modifier was removed, but there are still plenty around for production. So every point of production is even more powerful in comparison to gold. (Liberty/Windmill +15%/10% buildings, Might +25% units, smithy/harbour +15% units, stable +15% for horses, railroad +25%, diplomats +100% at best,...) So gold is only needed for maintenance, upgrading units and perhaps most important as part of the happiness system (povertyreduction). Production should be the best way to get stuff in general. But with the actual gold costs it rarely makes sense to buy anything with gold. The flexibility of gold is a big advantage, but not enough for 4-5 times the prize of it. My suggestions: - Reduce gold costs Buildings should cost 1,5-2x their production costs in gold. Military units and defense buildings should cost 2,5-3x their production costs in gold. They are more expensive because they are often needed "now"! This should have a prize. (Getting a unit or walls now can make the difference between losing a city or not. Getting your workshop working now or in 5 turns does not make such a big difference.) The factor should be always the same independent from era or the exact building/unit. Only military/non-military should matter (see above). - Tone down the prod modifiers and/or add some for gold (Policies, markets+, caravansery). e.g. Forge only for cities with enhanced iron/copper or remove modifier completely.