No, no,no, wait. What time have passed since the first homo sapiens started walking straight? I assume it's enough time for the next 'large-scale changes'? Since evolution is a continuous process.
At first it was a huge change - chimpanzee turned into a homo sapiens. (You like to say "common ancestor", but if we are true to ourselves, it's a chimpanzee.)What a great change in the genotype. And then these are "lactose tolerance, pigmentation." I think about evolution as of a development. So, turning (ok) the common ancestor into a human is a development or it's a change in the gene-pool? It seems that turning the common ancestor into a human being is a great deal event. In my opinion, this is occurrence of mind, and even more-awareness.
I ask about evolutionary change, comparable to this event. Or, at least, its origins.