What would the average skin tone and facial features look like after 300 years if every partner relationship was interracial until there were no other ethnicities? Just a hodgepodge of DNA. What would the average human look like having a little bit of everything in them?
I just think the idea is neat is all.
National Geographic (I think — it may have been Smithsonian or Scientific American or…) projected this back in the late 80s. The genetic “average” that they generated was beautiful.