Of course, this is an issue with more than just the sixth season. When Harrison and Stephen were no longer in the picture, and Abby went on to work for the White House, OPA was in no hurry to replace them. It was obvious Marcus would eventually become a gladiator, and it was thrilling to see him finally get to join OPA in season five. How great was it when he told the others, "That's how I gladiate?" And the budding romance between him and Mellie was so sweet — she deserves happiness! But now that he's the White House press secretary, and we hardly see him at all, other than in flashbacks to Mellie's campaign.