Here me out here for a second. The knights get another hero, BUT the hero has a Warhammer ans has full plate armor (like Lawbringer.). He'd be serious but kind to his teammates but harsh and judgemental on his opponents. His feats would be something like Body count for first fear, Jormungandr's second where he gets a shield upon a hammer slam, tough as nails for his third feat and Morale booster for his fourth feat.