Anyway, I have something to say about "diversity" in shows that maybe be crazy.
i am a history nut. when I was a kid, I would borrow all the ancient civilization books from libarary and read them dry.
Instead of race/gender historical characters, usually European history, how about create historical, or fantasy setting base on diverse places. One of the best historical setting film I watched was apolypto, detailing the final days of the Aztec civilization. Whether you like Mel Gibson, he was a great filmaker. Fact.
Why cannot more film, show base on cool cilization like these, or the Mayan, or from the many region of Africa. Then we have organic diversity, and support local film makers and economy.