I think Fish is an obvious candidate. With his strong knowledge and tactful opinions, I would feel at ease with my shares in his hands. ---Especially compared to someone I do not know, or their intentions.
Im sure there are 1-2 guys over on the Y board that would also be good candidates.
I think a requirement would be someone that has dilligently been following the case for at least a year, so they have and understand all the background info.
BTW: the current BOD controls who could be considered to fill slots. This is how they control the process and the board. They might be able to control who the prfd nominate, also.
It would be interesting to know what Bonderman's position is on this entire deal. If he was the one pushing all of this and has not throw equity to the wind, then he may be a good board member. He was on the board before, in believe.