Dal stepping down from being captain of the new Protostar to be Gwyn's number one, when his whole arc in the series was wanting to become captain. I get that, if the show were to continue, it would just be part of his arc of 'earning' the captain's chair, but this is the exact same thing they did with Michael and Saru in Discovery season three, and that whole thing was a waste of time, especially when Michael finally gets promoted to captain and then Saru demotes himself to her number one.