How about: pact of redemption?
If you or the party has done something wrong(hurting someone, killing someone, etc.) , then you need to do things that'll earn their forgiveness, bit by bit. Earning redemption shouldn't be a one-off act which would make it easy to cheat.
It could even be a change in the way your character sees and does things.
Agreed. That's why with the Pact of Reputation npc's &/or vendors would shun you if you kept breaking that pact. Townspeople would shun you because they just don't trust you anymore regardless of what you say or do. You would be forced to go to a previous vendor to sell your stuff & be forced to buy lower caliber items. Also you'll be forced to find new ways to continue/complete any quests in that area. But only for the town/area where you broke the pact. You get a fresh start in new towns.
