and Micheal knew just how hard it was, it was an ordeal, also it did take its toll on morgan, at the end when harry soulgazed morgan he saw how tiered, worn, and stained morgans soul was after all of the years
he was a good man but all of the things he had seen and done worn on him.
It was an ordeal - but it had more to do with shifting aspects than something like lawbreaker. As for the other example, living life as a cop does that.
Look at the change in Dresden from the first book to one of the more recent books. His world view has dimmed. He's getting quicker to react to things as threats... The Dresden from book one would never have come close to killing a couple of con goer the way Harry almost does in
Proven Guilty, but now he sees a threat and reacts to it. It's him seeing people die. It's him seeing the evil in the world. It's wanting to help to and not being able. What has happened is changing Dresden.
I would never have expected Dresden to turn his back on Susan, and the Dresden from the early book wouldn't have, but after all he has been through he did. He's done things that he hates himself for. Imagine how he'll be after hundreds of years. That's what happened to Morgan.
I'd say that some of the people who kill other people have hit a situation where they had to swap out aspects and it made sense to include something about those killings. Dresden, which all the mental stress he takes, could have easily said to his GM "How about we say that the battle with the demon in my head (or whatever it is that causing the stress) has got me thinking about that killing - so we work out me having nightmares over killing someone who needed killing?" and the GM saying "Sounds good - it should take you a while to work through that".
That makes more sense than someone losing refreshes over something that people did in the books - killing.
Butters has never killed anyone - but most of the reoccurring characters have. I can't see all of them losing refreshes over it.
Here's something a little more helpful: If you go with something like that, make it easier to buy off than lawbreaker. When you kill with magic you're not using a gun or a knife or anything like that - you are using your "you", your inner essence, maybe even your soul, and that should have a more extreme result than tossing a grenade into a room.
Richard