> Introducing once extinct species would disrupt the existing ecological balance and the conditions that made them extinct to begin with would continue to persi

> Introducing once extinct species would disrupt the existing ecological balance and the conditions that made them extinct to begin with would continue to persist and they would simply go extinct again. It is a little aggressive, but I like the case you imply for using CRISPR gene drives to wipe out invasive species. Just getting rats out of New Zealand would be a tremendous win.