User blog comment:Xilinoc/Ch. 541 - THE BLADE AND ME 2/@comment-4469678-20130613150255

Maybe the whole suppressing thing is why Ichigo's Bankai is so small and does nothing but increase his speed (In the anime, Hollow actually mocks Ichigo about his new bankai saying 'a Bankai that ONLY increases speed? Pathetic'). The Quincy let out as much Shinigami as needed to support a Bankai but pushed it down so that its full effects weren't realised.