What if, just what if Shunsui knows Ichigo has a real Zanpakuto now and he wants him to be the captain of the 8th Squad. Hence he's never returning to his friends..
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Also:
-What if Shuutaru made the Shuhakusho? 'Cos I'm thinking that's her contribution for Soul Society. She created the Shihakusho clothing that all Shinigami wear to this date. Remember when Ichigo first became one, the clothes just appeared out of nowhere? It is possible that there is something special about the clothes the Shinigami use. Also, there's the fact that Bankai can change your clothes, like Ichigo getting a black coat and Renji getting a fur collar.
Lastly:
What if she made Shunsui's kimono? Since Kubo did say it had a history.. Perhaps its history lies with Shutara?
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