Should we redesign humans?

… or, for that matter, monkeys? “Say you did create a human-chimp chimera that was like a dog, but much, much smarter. It loved you unconditionally and did what you wanted and was a sort of slave, but it enjoyed it. Does that being have a complaint against you? If it hadn’t been created in that way, it wouldn’t have existed. In that sense, it’s not harmed.”