Well, I can't think of any one for any reason will go take this job. This is a death sentence for the political career for whoever who took that job. I mean after this, even if Sunak can stay in Politics, he would probably be relegated to backbencher or worse. I mean, Ben Wallace didn't even take the first chance when he basically has all the backing he needs, and then this time around even BoJo and Penny drop the bid because they know this is a pile of shit to take into.
I think one of the reasons he took this job is because it's basically free, and the other is so that he can say he was the PM. This is more of a prestige thing for him, if I have to guess.