My point was his definitions of these different regions and populations in them suggest they would be relatively homogeneous within themselves while across the entire expanse of Middle Earth there was diversity. Therefore as if the hobbits were blue in one area, pink in another or grey in a third, similar to how we see elves in WOW, versus each population of hobbits being a blend of all those colors. I see nothing in his writing that suggests otherwise and technically that reflects how diversity works on a global and regional level. Therefore, generally the hobbits of the shire would all look similar, the Elves of whatever clan would all look similar and the dwarves of the Mines of Moria the same. And as he mentioned in the interview most of these groups were defined by bloodlines, especially at the level of kingship, which he believed in a lot. So that is another example of how he distinguished or segregated groups from one another by bloodline as being part of distinct clans or houses. Also, there are "black" dwarves in Middle Earth, just not the ones we know of from the North Western areas of Middle Earth. Those swarthy or dark skinned dwarves are further south in the lands of Harad. Again, reflecting that these different groups in their respective regions generally looked the same. There is a difference between diversity at the group level vs diversity at the individual level and I don't see Tolkien as intending that individual diversity would exist as implied by Amazaon. In fact, I would argue that even what we have seen so far from Amazon is far from promoting diversity in its fullest sense at the individual level. They have a few black Numenoreans, a few black elves, a few black hobbits and a couple black dwarves out of all these populations, which is what makes it look out of place, because it is just a few which makes them stand out as being so few. No Asian elves, no Asian hobbits, no Asian dwarves, no variation in skin color between the various individuals in these groups showing some as "mixed" for lack of a better term, etc. It looks more like the random choices of a studio rather than what one would expect of a homogeneous population as implied by Tolkien. I honestly don't think they gave more thought to it than some of us in this thread.