I can't say enough nice things about Hayden's return to the role. He nailed it. It's a big performance, he and Rosario have exactly the right chemistry - old trust, new mistrust and a tension between. Those scenes are fantastic, and they strengthen the redemption tale aspect of the overall Skywalker Saga by their addition.
it must have been weird for Hayden to return to a role he's synonymous with to put a capstone on a long and emotional story arc that he had nothing to do with, but you never would have been able to tell by the way he sold it