haha glad to see y'all like my theory
.
Basically his Bankai would allow him to "Control" reality. It wouldn't be anything like Aizen, it would be more.... Mindfucking. For instance he could let the enemy hit him, and then at the last second decide that in "his" world, when you hit someone, YOU take the damage, instead of the person you hit. Or he could decide that you can only hurt someone if you strike certain parts of the body... just generally anything that would throw people concentration off.
That's why Ukitake didn't want him using it during the Winter War, it would have drawn ALL the other fights into his power and the other Shinigami could have been hurt, because they wouldn't have known the "rules"
The aging thing is wierd.. I get the feeling it's more or less 5 to 1. In the 100 years since Turn Back the Pendulum everyone seems to have aged ~20 years. Of course this doesn't explain how Yama-ji and the big three could be 1000+ and not be dead
. Maybe you can stop your ageing when you feel like it or something...
As for King Shunsui and his crazy name...
I think the release of this info now, when the possibility of Bankai is high... It MUST be intentional, this is part of why I think my theory on his Bankai could be true. he's the "Servant who possesses all" because while his Zanpaktou is technically in charge, he's the one that controls what happens within the sphere of it's influence.