Yeah I can see that. Cora has so much credibility that he'll get buy-in as long as it's not too chaotic a plan.At the right price, I think the Sox would be perfectly happy to bring Kimbrel back to close. The notion of giving Barnes his chance isn't going to stop them.
Besides, I think that absent bringing back Kimbrel, they may be inclined to eschew the "traditional" closer role for more of a committee. Barnes likely would be central to that strategy, but he wouldn't be locked into pitching the 9th. Much as, in the playoffs, he wasn't locked into pitching the 8th. He was brought into a tight spot or for a particular part of the opponent's order whether it came up in the 6th or the 8th.