User blog comment:Sicarius001/Royal Guard and Eighth Division Captain/@comment-7582769-20130418151316/@comment-4207271-20130419010323

It's more likely that Kubo will go with a Shinigami for the Captaincy, and Tsukishima is human, Ganju is a strong soul and Ginjo has done too much against Soul Society to be eligible. Ichigo? Maybe, but it is more likely for someone else simply for the plot, Ichigo is more suited to being outside the soul society, and would not suit the role.