User blog comment:Xilinoc/Ch. 610 - Mausoleum of Skulls/@comment-4688597-20141218214627/@comment-5398287-20141219003209

I'm fairly certain Ichigo's hit his absolute peak with the training in the Royal Palace. He's got his true Zanpakuto, all his physical abilities have increased, and he's made peace with his Quincy and Hollows powers. Adding anything else would be ridiculous.