One issue with Culture is that it's use is relatively marginal in small amounts.
You can push your borders, you can go for cultural victory -- but if you aren't going for a cultural victory, your central cities culture doesn't matter.
So here is an idea...
What if cultural production was used to build some buildings and wonders?
For this to work, the ratio would have to be tweaked, and the insane cultural multiplication effects of some wonders/etc would have to be brought under control.
Then the cultural victory standard would have to be rebalanced around lower max culture bonus's.
So... Start with the cash-rushing ratio for Culture
roduction ratio for selected buildings. I thin
Half the +% culture effects of effects (ie, +50% goes down to +25%, +100% goes down to +50%).
Figure out what can be built with culture -- by default, every city improvement and wonder?
Limit the addition of production via culture to the amount of raw production -- this keeps the effect under control, at most doubling your productivity.
Boost building costs by how much? We don't want to make buildings trivial to produce...
Should buildings that produce culture have their price increased, due to this higher benefit?
You can push your borders, you can go for cultural victory -- but if you aren't going for a cultural victory, your central cities culture doesn't matter.
So here is an idea...
What if cultural production was used to build some buildings and wonders?
For this to work, the ratio would have to be tweaked, and the insane cultural multiplication effects of some wonders/etc would have to be brought under control.
Then the cultural victory standard would have to be rebalanced around lower max culture bonus's.
So... Start with the cash-rushing ratio for Culture

Half the +% culture effects of effects (ie, +50% goes down to +25%, +100% goes down to +50%).
Figure out what can be built with culture -- by default, every city improvement and wonder?
Limit the addition of production via culture to the amount of raw production -- this keeps the effect under control, at most doubling your productivity.
Boost building costs by how much? We don't want to make buildings trivial to produce...
Should buildings that produce culture have their price increased, due to this higher benefit?