Wonder what happens when escaping Garakai peeps integrate into other societies. Will Ialu give pursuit and destroy what remains of the Human race in that petty conflict? Also, remember it's technically impossible to keep all of those 3.000 dragons in check, some are either going to go rogue or go against orders, or they'll simply get caught up in the moment while hunting the Garakai citizens. You can count on at least 4000-5000 people dying if you unleash them.