Since we're such good two shoes, after the battle with the traitors we'll be forced to show mercy.
The traitor, feel so ashamed will either kill him self; either sacrificing themselves to save us from a bigger bad. Or they'll out right refuse our aid and "go down with the ship" or some trope like that
Better yet, be a loveable bad guy that'll help us in future quests like Nero
Can you imagine everyone being all chummy with Ilberd or Laurentius?