Resurrection feature is not consequently considered.
On some NPCs, like Victoria, you can kill -> resurrect, kill -> resurrect and so on. And on other you can't, like Evelyn or the guys at the church. There should be a kind of flag or property, something that the player knows if the NPC can be resurrected or not.
Furthermore it would be very cool if NPCs would behave different when they see / meet resurrected characters, like the mayor + Victoria for example.