Its almost a given that there will be a Civ IV, considering how well Civ III sold.
But what i would want most........
1) A much more in-depth diplomacy model. Like the other person mentioned, i forget who!, being able to broker deals, pay off a Civ to conduct warfare without you yourself getting involved, unit tradeing (must...have...unit...tradeing) and stuff like that.
2) EVERY TECH SHOULD BE WORTH WHILE. A few techs (especially in the latter stages) seem to be just thrown in to prolong the inevitable. I think every tech should do something good, and possibly, do something bad to balance it out.
For example, Engineering. this enabled you to plant forests, and bridge rivers so it wouldnt cost the extra move. Little features like that to each tech would be great for all of them. Would make the strategic importance of each one much more involved.
3)Each Civ should have added traits. instead of just the two that each individual Civ has now, they should have little perks as well. This would make dealing with them more fun, and also give them all more personality.
4)More resources and luxuries! Everyone can agree on this, just more variety...
5)I LOVE the idea of the world being in the shape of a 3D globe! That would be very cool.
6)A naming system. Theres a random map generator, but wouldnt it be cool if it also randomely generated names for the bays, channels, mountain ranges, etc, that you waged war in? Ive thought about this a lot, it would also serve to give the world personality as well. There could be a hot key button that could turn the names on or off.
Theres just so many things i would like to see added... The people that say no more could be done to improve the system either never liked Civ 3 to begin with or are just to in love with the game to change it
