Mermaid Genetics

I stopped playing the mermaids because i can't stand that they don't pass on genetics. I like my Sims to be cute. Not ugly af like the townie sims are. And thats what they kept having. Townie babies. Which i just set them outside my sims house in their bassinets, and let the game take them away from me. because i didn't want them. I got so annoyed and just stopped playing the mermaids altogether. I hope they fix the genetics or i'm just not gonna play the mermaids. I like the one's i make. I hate the townies. And usually try to change them all to my liking. This really irritates me alot. I want MY mermaids to pass on their genetics. I know you can do it in cas. But i like my sims to go through the whole pregnancy, and have babies that favor them. If they ever fix this annoyance, let me know please.