Yeah, it's interesting, humans already HAVE an incredibly complex sexual selection mechanism. There's all kinds of things that you are capable of selecting for without necessarily even realizing what you're doing. That selection pressure likely already includes the relevant things such a billionaire might care about, and many other things they can't even quantify, which likely includes genetic compatibility. The system we have has worked pretty well for a long time. It's hard to optimize such a complex and fuzzy thing.