Board Thread:General Discussion/@comment-24159286-20131112052402/@comment-6746577-20131121012416

Schiffy wrote:

The Central 46 has among its regulations that a Shinigami is not allowed to attempt to obtain Hollow powers, and the consequence for doing such is that they will be treated as a Hollow through an through, which is initially what the plan was for Shinji et al. An exception was made for them 100 years after the fact because of the help they provided against Aizen and his army (and of course, because Aizen was the reason they even gained Hollow powers in the first place).

Now onto your point about Shinigami not being a race. That is true, but at the same time, neither is Visored. The Visored are simply the group of people that were "given" Hollow powers by Aizen. So no, Hitsugaya and Sui-Feng aren't Visoreds (plus, those powers seem to be temporary for them). And while the Visored are simply Shinigami with Hollow powers, they are still a sub-class of Shinigami. An Arrancar is the polar opposite of that, and is a sub-class of Hollow. Because Grimmjow is a Hollow first and a being with a Zanpakutō‎ second, the Gotei 13 would never allow him among their ranks, and the Central 46 would never let it pass if someone so much as proposed it.

I understand the rules but that was under Yamamoto's reign. Shunsui seems to be more liberal. He already appealed to the new 46 the decision to train Kenny and to take on 2 Lieutenants. He also was one of the people that fought to free Rukia from execution. Im not saying Grimmjow will be a Shinigami. All Im saying is that things are more open with the new person in charge in Shunsui