I like this. Yes, sex with homo floresiensis is a scene that I probably wouldn't get into myself. (Neanderthal chicks might be a different story.) But humanity has grown insular over the millennia, loath to admit we have any relatives among the animal kingdom, much less peers. So I'm gladdened to know that we once reached out to our kindred species, that we carry some of them in our makeup. Let this knowledge go out.
It's less thrilling to know that they're all dead. Their estate lawyers and life insurance companies may want to look into this.