When I write stuff and I help cast it, I turn away good people all the time. I may turn them down because this one's too tall and that one doesn't have a high enough voice or this one looks to old to match up with that one - there's a billion reasons not to hire somebody.
“There were two things going on: 1) I had already established in my own mind where I wanted to go with the next series, and having James around as a Grey Eminence would have complicated matters. He had had an amazing life and it was time to bid him good-bye.”