CRISPR allows germ-line propagating modifications. Think about creating a combo modification that expresses itself only after a 2nd or 3rd generation but also i

CRISPR allows germ-line propagating modifications. Think about creating a combo modification that expresses itself only after a 2nd or 3rd generation but also increases reproduction success for intervening generations- you could wipe out whole species, in a fairly straightforward manner. A modified flu could deliver a 'Children of Men' style germline infertility. This is like making everyone a little Kim Jong-un.