I think there should be some reward for risk taking when you attack someone. And i think it should be depend of diference in power of you and enemy.
Sometimes to defent a city you need to attack ppl who are equal or even high power than you. They can flee and lose 1 energy but you are taking great risk that you will be involve in fight.
I think some honor bonnus for attacking would be nice. Maybe the ammount of quest if enemy is equal to you and proportionally if the enemy is stronger or weaker.
What do you think about that idea ?