User blog comment:Godisme/belIEve/@comment-2089817-20111123082032/@comment-4484409-20111123160828

Kugo was first so they didn't replace Ichigo with him. Also, it's probably not that the Soul Society doesn't trust him, they just want to monitor him in case anything goes down so they can 1. get to him quickly and 2. In case he's causing the problem, correct him. That is, if what Kugo is saying is even true.