Actually there is more to it than that. The main reason is definitely political...You see, the Chinese want Mao to be respected in the West as well, and it is illegal to talk negatively about Mao in China. For 2K and Firaxis, adding Mao means more money and support from China. They probably don't mind other Chinese leaders as well, but they would especially want Mao. Also, if the Devs do not include Mao in the game anymore, it is possible that China may take it that he is deliberately not being included, and that could mean a drop in sales of the game in that part of the world (I've heard of something similar actually happening for something else)...That is just a risk though, and may be overly pessimistic. Also, the fact that Mao has already appeared a lot in the game series makes it a lot less risky to exclude him now, as they can reason that he has been in the game multiple times before, and that the game company cannot have anything against Mao. Anyway, it would be safer for achieving the highest possible game sales in China to include Mao, and the West generally doesn't care, or don't know about how Mao killed millions of Chinese people (How ironic that it is his inclusion that the Chinese want, when anyone who loves Chinese people would not like seeing someone in the game who is responsible for the deaths of many millions of Chinese). What would be more than just a risk is if they did include him in a strictly negative way. That would ensure that the game is banned in China, and probably even everything from 2K and Firaxis.