Thyrwyn
Guardian at the Gate
It is pretty obvious that culture at least is on a more even footing with science than it used to be. Tile expansion can be supplemented with gold, but the bonuses from Social Policies seem too substantial to pass up. By moving (what used to be) civics out of the tech tree (science) and into the Social policy system (culture), they have certainly moved in the direction of making them more equal.Anyway, for now I'll just leave it at it's hard to tell yet whether there will be much balance between gold,science, culture etc. There doesn't necessarily need to be, but the game will be quite a bit different if science is finally on a more level playing field - I think I would enjoy the game more that way too.
Science is a "uni-tasker" (yes, I watch the food channel): it is only good for techs;
Culture enables Policies & expansion - both of which are vital;
Production builds units and buildings - but is ultimately dependent on science (if you aren't tech-ing, you won't have any buildings to build and your units will be so out-classed it won't matter);
Gold remains the catch-all: you need it to maintain your units and buildings; it can be used to expand; and it can be used to supplement Science through research agreements, but it can no longer replace Science (through trade).
With Techs being removed from the diplomatic menu, Science can no longer be used to supplement gold (through trade). This also makes expansion (resources) and gold more valuable.
It certainly seems more balanced. (he says optimistically...)