User blog comment:Xilinoc/Ch. 570 (I can't think of a witty title at 11 pm)/@comment-24031741-20140227102154/@comment-7079377-20140227113735

In reply to your point "it's all a set up so we can see how strong Ichigo will be when he defeats him."

I think that the final battle will be Ywach vs many of the Shinigamim well at least Ichigo, Rukia and Renji. As Ywach will have all these abilities then I think more Shinigami will be involved to counter them.