Now I'm someone who is slightly interested in anthropology, and I do find many of these cultural distinctions such as dress, architecture, history and myths to be fascinating. So it'll probably be reflected in settings I run where there's a large variety of nations who are culturally distinct and resemble particular human cultures.
Now that sounds great. And I note that avoids the implicit assumption of most of this thread which is, "The way to get diversity is show someone with black skin and african features." That assumption to me really only demonstrates the lack of diversity of cultural viewpoints occuring in this thread.
Anyways I do get slightly annoyed when people assume I'm Japanese rather than Chinese. They should figure out that it's more likely I'm Chinese when there's about 1.3 billion Chinese and only about 130 million Japanese. Which is why I don't assume other peoples nationalities, until I know more about them.
That, and Japanese and Chinese people are about as distinctly different in appearance as Swedes and Italians. There is some overlap in both groups, but 'all Asians look alike' is a product more of ignorance than anything else. And heck, speaking of ignorance, how many ethnic groups of Chinese are there? I couldn't tell you.
But on the subject of non-European racism, I remember being in discussion with several other computer programmers, about how it was good to be in America because in India, the Kashimiri Brahman wouldn't even be able to talk to his lower caste colleague, and the Pakistani born programmer said that it was a good think that they were in America, because back in India they'd have to kill each other.
I also knew a case where a Korean and Japanese couple married in America, but neither of them could return home because in doing so they were outcasts in both of thier families.
Countries like India, Liberia and Brazil are interesting studies in whether the American model of what 'diversity' means is in any way applicable to reality, or for that matter whether American notion of fighting racism with racism is actually worth the positive good it can do.