>> An interesting variant is multiple protectors at odds trying to look out for the same protectorate.

...and it would not be unheard of for the protectors to respect each others' intent or abilities...once they calm down.<<

Prevailingly true.

>> Also, I think Cas might need some ettiquite lessons for the politicking.<<

Cas needs lessons in a LOT of things right now, but he is overwhelmed and can't do everything at once. He's struggling to prioritize. He likes learning, but dislikes asking for help. So it's a challenge.