Board Thread:General Discussion/@comment-24251492-20131204155955/@comment-26420452-20131204203018

I was only focusing on the reasons the Hōgyoku couldn't be a valid justification and so I forgot about his other merits, my bad. It's undeniable that the foundation of the SRDI has ameliorated very much the effectiveness of Gotei 13's operations.

As for the Gigai, they'd already been invented by the time Urahara became a Captain (he was working on the Human Shell and/or the Reiatsu Concealing ones during the incident).