It seems to me that Harbaugh's firing caught them off guard, and they asked to interview names they saw on Twitter or forums.
I don't think it's a good list of candidates; I think there was little research, little ingenuity.
Saleh lost the locker room with the Jets, and his offensive coordinators were awful. Flores lost the locker room, and the players hate him. Schwarz might be a good coordinator, but little else. Nagy was a disaster with the Bears, even though he could have chosen the QB. Brady's offense doesn't impress me at all. Stefansky couldn't manage a locker room with Odell and Baker. Joseph was a loser with the Broncos. Weaver doesn't tell you anything; his unit is nothing special. McDaniel had a good team, but they were always pretty easy to play against us.
I like Kubiak and Minter; he'd be good with Scheelhase, Shula, or Webb.
I don't like the rest; they don't seem like an improvement or a change from Harbaugh. We need fresh blood, new ideas.