I've heard of something like this before. It was in science class when we were studying gentetics. The teacher said something about a genetically perfect baby, where the parents got to 'customize' their unborn kid so he or she would have all the traits they wanted. I also read a book called Helix where the same thing happened, but everything was ran by powercrazy priests who started making half animal creatures as well.
Anyways, good book. I could definately see this becoming pblsihed, that is, if publishers don't find it disturbing. Not that that I think it is- I honestly find the subject, cold as it is, fascinating.