I really think that this whole idea is worth looking into, if it helps our understanding of the past become better. The idea in my mind is to learn from the past, so the good is repeated, and the bad is not. If I had to look down the road, and guess what geneticists will find I would say that first they will find that most Europeans are closely related, and then they will find that any other group of peoples are related. Then when they have us neatly grouped in 2 or 3 main groups they'll say we really are not all that different after all. So, let's just skip to that point, and learn to respect, and learn from each other.