User blog comment:Xilinoc/Ch. 574 DEATH IN VISION/@comment-29183117-20140326144449

Giving Gremmy a power limit was the best thing to do, cuz having a Sternritter with a power that would essentially be more OP than Aizen would've been insane. Chapter was fairly good, it was refreshing to have a chapter like this. Not every chapter has to have a monumental "Rukia has Bankai"-level reveal.

Also, perhaps Kenpachi not knowing what a cookie is (despite being around Yachiru all the time) means that Gremmy was (perhaps in the original Japanese) referring to a different kind than Kenny would be accustomed to. Kinda supports the theory that the Sternritter are all from different countries.