User blog comment:Xilinoc/Ch. 611 - The Soul King Dies (edgy as ever, Kubo)/@comment-6904925-20141226172022/@comment-5398287-20141226175743

I understand where you're coming from on that, but I think he's killed off more than enough to make an impact at this point. The most powerful Shinigami born in the last 1000 years and Soul Society's greatest healer are gone, two more captains and one who could have filled in an empty captaincy are dead, and almost 70% of the rank-and-file Shinigami, who are largely responsible for maintaining the balance of souls between worlds, have been slaughtered as well - and that amount has only gone up with this second invasion. In a way, they're more devastating as losses to the Gotei 13 and existence as large because there are now a whole lot less people to keep the cycle of souls going, and given how rare it is for a Soul to have the power necessary to become a Shinigami in the first place, it'll be a long time before that number returns to normal. Keep in mind that we haven't had a single Shinigami death since the Soul Society arc (and that was Mayuri killing his own subordinates, no less), and I'd say that what we've currently got in terms of death toll is more than enough - not to mention all the captains currently injured or rendered unable to fight.