Why human DNA?
Fugitive was revealed to have human DNA. So knowing that (at least in "The Predator") yautja enhance themselves to be "harder, better, faster, stronger", it kinda lacks sense to me. I doubt predators are dumber than humans, so there is nothing we have that yautja don't have already. Maybe except creative thinking, but I'd say it is pretty far-fetched. Why would the Fugitive "enhance" himself with human DNA then?
I'm no biologist, maybe I'm missing something.