I don't think we have to worry about bland sameness. Different people have different tastes, and sooner or later, genetic editing will be used to express aesthetic preferences. Expect novel skin, hair, and eye coloration at the very least. Probably feathers, pointy ears, cute fangs, and size changes. Maybe even centauroids or seal-like people. In a century we'll likely be speciating like nobody's business.
I'm not anti-Christian. I'm anti-stupid.