My apologies for misinterpreting. As for your point, you may be right. My admittedly limited knowledge of genetics makes me think that it would be more homogenous, but I could be wrong - especially after 1800 years (Manetheren was destroyed in 1200 AB).
I don't think so, as I tried to explain. As I see it, having issues with a diverse cast implies either a kind of purism to the books, which I haven't said anything about, and/or other more nefarious inclinations, which I don't think I've given any reason to think I'm implying. My "issue"--such as it is--is solely on the basis of world-building verisimilitude. Really, it should be broadened beyond this one issue - as I said in my previous post to hawkeyefan. Again, they're all just minor quibbles, but they add up to a bit of a "hmm, ok."
I probably shouldn't have suggested that the showrunners are pandering, because I honestly don't know. But...
I'm not sure what you're saying here. GoT had distinct ethnicities for the various peoples, in a realistic way. But it was a very different world: Medieval fantasy vs. post-apocalyptic fantasy.
I can't remember, but did Jordan depict the different nations as distinctly different?