--> I'd like to see a "second level" of luxury/happiness resource
e.g. - have gems? - build jeweler which produces jewelry as a new luxury/happiness item .... alot of resources could have this "second level" ... heck maybe even a "third level", or two resources needed to produce a "second level (you get the idea...)
I really like this idea. I have missed a second 'level' of luxuries in this game. In Civ4 it there was sort of a second level. Not in the sense of using other resources to produce them but rather you got access to some of them later in the game. I liked this second growth phase.
Other than that I'll repeat things already said.
>Interesting tile yields.
>Interesting tile improvements.
>SODs(Compared to the current system SODs are nicer and they don't brake the rest of the game. To be honest armies or something like that would probably be better. Something like CtP style combat could probably work)
>Fix the messed up research speed to build time ratio.
>Interesting diplomacy
>Persistent diplomacy( Make deals last until cancelled so you don't have to get the open border brigade knocking on your door every x turns)
>Open trade agreements(Creates trade routes between partners cities and you capital if linked)
>Make city states interesting or take them out, just not a by x, y or z buttons. (Honestly these feel like the where implemented just to suck up gold from the other civs)
EDIT: > Do something about research agreements, this pay money, wait x turns is so gamey. How hard is it to implement something like: Continuous pay upkeep for the agreement and receive a research bonus or a percentage of the partners total produced research.
There where more points but I can't think of them right now. To be honest most of these things should never have been a problem to begin with.