Erwin/Sabrina
Well, I think, in a way, this place might be a sort of refuge for people who were set to die where they're from. I know I was on a path leading to my death, and Regulus found out that he died shortly after his arrival here. I'm just not sure how many people here are or have been dead in their non-hotel lives.
I consider Stephen to be my mentor of sorts, and I'm on good terms with both Jinn and Loki, so I could see if they'd be interested in meeting. I've never really spoken to Natasha, but she seems smart and willing to listen. Oh, and I know Phasma would probably want on board with any sort of emergency planning committee, and Yennefer and Geralt might too.