In Mount & Blade II: Bannerlord, you don't need to fight or execute everyone you meet. You can actually recruit enemy lords to your kingdom.
Bannerlord companions: How to recruit the best Bannerlord tips: Our full beginner's guide Bannerlord difficulty: Which to choose Bannerlord mods: The best player-made additions Bannerlord marriage: How to start a family Bannerlord combat: Battle and 1v1 tips Bannerlord money: Get rich quick Bannerlo...