User blog comment:Nick D Wolfwood/Routing for Ichigo, the power stat analysis/@comment-1393830-20100819172533

The only possible way I see of bringing in a new antagonist that won't require the Gotei 13 to just leave it to Ichigo is if Ichigo somehow loses some of his power in the fight against Aizen. Say, if the final GT ends up causing Ichigo to lose strength after its use. I highly, highly, highly doubt anything of the sort will happen though