Production
It would be a much better civ game if you could produce multiple items in your cities. The production would then be divided between the items, and you should be able to ajust their priority.
Technology
It's very complicated to make a good tech tree, so i think it woud be better to use a technology function similar to Microsoft's Rise Of nations. Instead of choosing between different research items, you could choose between commercial, millitary, scientific, civil and engineering research. If the gap between two of the research ways, the bigger one will slow down and the smaller one will gain more speed. To get technologies like tanks for instance, you must have researched 500 military, 450 science, 490 engineering research. A factory would then need around 460 engineering, 430 science, 400 civil and 410 commercial research.
Ideologies and religion
Religions and ideologies shouldn't have names, but every civ should start with their own polytheism. To gain political advantages, you should try to fill your neighbours with your religion. Later in the game, great prophets can start great religions, which have much more political and cultural influence. When i play civ IV, civilizations like America can be the founder of hinduism, and china the homeland of Islam. Every dork can see that the style on the buddhistic and hinduistic religions looks very similar to the asian buildings, and the christian buildings is very like the europian buildings. In civ V, the great religions should get the style of their homeland, and have names like Great religion 1, Great religion 2...
At the end of the industrial age, a new kind of religion should appear: Ideologies. Fascism, Communism, Capitalism. When Russia china etc. come to this point, they'll have a great chance of getting Communism, Italy or Germany usually get Fascism, America and western europe will more likely get Capitalism. Every civ will have numbers showing which ideology they'll most likely get.
An example:
[
Germany
Fascism 80 %
Communism 10%
Capitalism 10 %
Italy
Fascism 80 %
Communism 5 %
Capitalism 15 %
France
Fascism 10 %
Communism 10 %
Capitalism 80 %
America
Fascism 10 %
Communism 5 %
Capitalism 85 %
]
Space
Colonies on the moon or on Mars, Space Stations, Exploration of the solar system. Doesn't that sound great? Harvest Helium - 3 on the moon-surface and use them in your Fusion Reactors.
Read about Helium - 3 on the moon here!
In space, you can place devices to destroy your foe's space constructions, Star Wars has begun!!
In the future, you can make vehicles to explore mars and the moon, an maybe fight wars there?
Civ IV diplomacy Sucks!
I like the diplomacy in Civ III better than the diplomacy in Civ IV. You must almost advance to the medieval age before your'e able to do anything at all. Your opponents are also very unwilling to share their trade items. I think the creators of civ V should take a closer look after threatys in the world history. I want to use my neighbours to co-operate with me in strategical plans, trade with units, create defensive or trade pacts where the members can vote if another civ want to become a member (Like EU or NATO),
The leaders can't just talk about the weather!
Units
I'm tired of upgrading units, and it's expensive as making peace with a Deity. Units should be upgraded free and automatically, let it require a special amount of Military research instead. The units should be less overpower, and a bit cheaper. I also miss the armies in civ III, i want it back, just with the ability to make units leave the army.
