Renown should work as a multiplier for any trait or fame gain.
Whether I am merciful to a looter or not, if no one knows of me, that should't affect my reputation much, but if I am a famous lord word should get around quick if I execute X or let go X in battle.
Npc power level should also play a part, it's not the same to do a favor to a powerfull merchant who has a lot of contacts than to do it to a lowlife with no influence whatsoever.
Just my 2 cents on this
Whether I am merciful to a looter or not, if no one knows of me, that should't affect my reputation much, but if I am a famous lord word should get around quick if I execute X or let go X in battle.
Npc power level should also play a part, it's not the same to do a favor to a powerfull merchant who has a lot of contacts than to do it to a lowlife with no influence whatsoever.
Just my 2 cents on this