Economic system improvements

I found in a new economic system a lot of potential for a more realistic game, in where we can add concepts like GNP, GNP per capita, HDI. My main ideas are to integrate the resources with buildings to generate new resources or revenues, the resource consumption should depend on population and economic status facts, and the national economy should impact in diplomacy and politics. Other ideas are to include or create:

• A budget system like in Simcity. Renevues: taxes, loans and foreign trade. Outflow: external debt, foreign trade, military expenses, public works, healthcare and science.
  
• Manufactered goods that uses raw materials.
  
• Imports and exports system in where we can fix taxes for products or export products from state owned enterprises.
  
• National currency that allows to create a currency system with inflation in less stable countries impacting the economy (imports and exports).
  
• Economic victory that depends on the GNP or HDI.
  
• Real embargos and free trade agreements. Is like lowering taxes and having happier people and more specialists, but in some cases affecting the local industry.
  
• Economic blocks and the posibility to create a common currency.
  
• New national wonders like National Bank.
  
• Oil pipelines, water canals, sea routes. Complete integration between the terrain and resources with the economy.
  

I found some of these ideas at the forums and I notice a consensus about developing a real economic system. Since Civilization 1 all the games have an overestimated focus in war and militia. Let's make in Civ 5 a game that you choose a new path to victory.