This could possibly be unbalancing, but it might be interesting to include - Industries. The production and trade of certain goods were practically essential for the development of various civilizations. Since city improvements can be set to require certain resources (even luxuries), how about adding improvements and wonders that require certain luxuries to sort of simulate the usage and processing of luxury resources?
For example:
Silk Weaver : Requires Silk to be within radius; gives +50% Luxuries and +50% tax output
Jeweler : Requires Gems to be within radius; gives +50% Luxuries and +50% tax output
The Silk Road : Great Wonder; Requires Silk and at least 5 markets within your empire; gives +1 trade bonus to all trade-producing tiles and 2 advances (to simulate the exchange of ideas resulting from the Silk Road)
For example:
Silk Weaver : Requires Silk to be within radius; gives +50% Luxuries and +50% tax output
Jeweler : Requires Gems to be within radius; gives +50% Luxuries and +50% tax output
The Silk Road : Great Wonder; Requires Silk and at least 5 markets within your empire; gives +1 trade bonus to all trade-producing tiles and 2 advances (to simulate the exchange of ideas resulting from the Silk Road)
Comment