"It's not unheard-of for someone to design a child that's principally her and her love-poem's genes. But it's equally not-unheard-of to do the same with one's friends, and in either case if whoever one answers to - the constellation contract-arrangers or the planetary consort or the Empress herself, depending on how high up one is in the hierarchy at the time one attempts this - if she finds that one is designing for sentiment rather than improvement then one risks losing considerable creative control. It is very common to make minor cosmetic changes for sentimental reasons. My designer gave me her best friend's eyes, for instance."