That’s actually kind of how I’m thinking about my idea; Din’s vague quest would be helping Bo reunite the Mandalorians using the darksaber, but the episodic side quests would change up, from classic duels, to accomplishing great feats as “favors” of course, to more peacefully recruiting someone.
Season 2 saw them fully merge the lone gun fighter and knightly quest aspect of the show - Din traveling around and still having weekly adventures, but clearly still building on the same overall quest and character development.
Or they could just have him be a hunter for another season, and have the background story show him slowly getting less and less satisfied with that old life.