thanks for the interest and feedback.
Parthian UHV: I never tested it so thanks for being the first. I would have just gone with a palace but I wanted to differentiate their goal and the Bactrians (build a palace in India) and Heroic Epic seemed appropriate. the artist from the Zoroastrian Temple to bulb Literature is a great idea. don't you eventually get an Engineer from the Hanging Gardens in Babylon? there's also no particular reason for the deadline to be 50BC, so it could be later. the Parthians lasted right up to the Sassanid takeover so its actually a bit weird they don't have an endurance goal of some kind. maybe that would be better than trying to kill Roman units. I'm worried about having to occasionally go all the way to Italy to find them, which would be silly. anyway I'm open to ideas about this.
will change Xian to Changan. I'd love to have someone improve the Chinese city map. If you give me an email I can share the google doc with you.
for the Chinese provinces all I could find were the modern provinces, which are mostly too small, and the warring states, which at least were old and more or less the right size. I'm open to suggestions.
as far as testing goes, I'm focused on the 1st half, basically everything up the Kushans. the Kushan starts have been highly varied, everything from most civs collapsed to 3 huge armies (Parthian, Han and Satavahana) right on my borders at spawn and at war. in general the Parthians need to be more aggressive towards Mesopotamia and the Romans need to be a bit more consistent. also the Celts seem to need more nerfing. I'd really like AI Rome and Parthia to meet up in the middle east in most games.
I may actually just make a mechanism that gives independent cities in appropriate areas to imperial civs at randomly determined intervals. this happened quite a bit at the time, many mediterranean city-states were at times happy to place themselves under the protection of Rome or another power, and there's nothing more annoying than powerful AIs that just refuse to take that great city on their doorstep, in their historical area.
as far as early UHVs are concerned, I think Egypt, the Seleucids, Rome, Mauryans, Qin, Armenia and Han are quite solid, all doable and fun (I think). the Han need the tech goal (Paper) to be more challenging, so I'll probably change it from a race to a deadline (or both). the other civs are more up in the air. I'd like to think of something more compelling for Carthage, still looking for a good third goal for Judea, no idea how the Satavahanas goal of spreading religion to SE Asia when there are barely any civs there will work out etc.
Well, how much hammers can those cities actually use ? Because the area is so food-poor that it's quite possible that they don't have enough food to work all the productive tiles, making them have to choose between gold and hammers.
no there probably isn't enough food to work those mines. that's why my change doesn't actually change the balance that much. taking the food to work the tiles into account it probably doesn't make more than 3 or 4 hammers difference in any city site, with a few exceptions. still thinking about this but leaving it your guys' way for now.