I know I know, Civ is a GAME, not a history textbook, so don't take it too seriously.
BUT, on the other side of the coin:
Imagine if Civ does not have all those countries, historical figures, nationally related wonders, will the game sell as well? Say if I call it civ black, civ red and civ blue, and the leaders become a monkey, an elephant, a dog, etc. Can you guarantee all the current players are still interested in it?
So it's quite obvious to me the game company has ripped benefit from the historical elements, so maybe... just maybe... should they do a bit more homework on this component? If some customers will enjoy the game more and will be interested in buying the expansion if they can play a leader that make them prouder, should the game company invest a few more days asking a few history major graduates to improve their product? As a Chinese, I only played Mao twice (both from random leaders) in almost a thousand of games I've played. I don't like him to start with.
And while a game is supposedly for fun, does it have to be ONLY that junior type of fun? If a game can bring in a historical aspect in a relatively accurate manner, will it be a better, deeper product?
Also, I believe Civ players are mostly SMART people

. I didn't know some of the western leaders (and African ones as well) and the game brings them to my attention. Now Hannibal is my favorite, and I tried to see if Catherine indeed looked good (well, reality is harsh

). Then why is it impossible for the equally smart western Civ players to learn some truly non-Western leaders? For example, Tang Taizong was essentially a hybrid of Augustus and Hannibal. Empress Wu was sexy, cunning and highly competent. Isn't it also fun to know people like that existed in our past?
Finally, I guess sometimes it's not the lack of research for the non-western part of history, it's the stereotype that is inherent in the choice of leaders that ticks me (I can't speak too much for others) off. Picking some totalian tyrannies and tagged them with protective. I can only say, I don't like it!