mitsho
Deity
a suggestion to the screen above. Why don't you move babylon a bit south, rename it Seleukia and move dura europos a tile southeast, rename it babylon? this would be a bit more accurate and don't change much... 
to city improvements, it is difficult to find things which are ok for every civ on the world. e.g. in the mediterranean, the 'agora' is a good stylish example, but then, they would also build 'agoras' in china and in the olmec state. So that's not a good idea, we just have to rename it to 'marketplace' which I find a bit boring.
so waht do you want?
Then to the seven wonders, you have them included, haven't you? If you do this I would suggest to expand the number a bit. Because for example the great wall would have been called one of the wonders, IF the greeks had known it...
mfG mitsho

to city improvements, it is difficult to find things which are ok for every civ on the world. e.g. in the mediterranean, the 'agora' is a good stylish example, but then, they would also build 'agoras' in china and in the olmec state. So that's not a good idea, we just have to rename it to 'marketplace' which I find a bit boring.

so waht do you want?
Then to the seven wonders, you have them included, haven't you? If you do this I would suggest to expand the number a bit. Because for example the great wall would have been called one of the wonders, IF the greeks had known it...
mfG mitsho