I like Wesley a lot but I liked the character a lot more when he was called Waylon Smithers.
I'd totally have traded Karen for Ben. I get what the show and the characters, even Ben's wife, were trying to convince me of, but his death IS Karen's fucking fault. However, it works because he is such a good character who we do end up caring a great deal about. It sank me when he died. Ben told Karen more than once he had a wife to worry about and TAKE CARE OF. But she kept pushing him into danger, and trying to guilt trip him into pursuing the case, and then she TRICKED HIM into going to the nursing home.
That last part is what cements that it is her fault. His wife said that it wasn't her fault because Ben died doing what he wanted to do. But he died because he went to the nursing home, and Karen tricked his ass into going there. So it is 100% her fucking fault.
I'll give it to them because it took balls to do it, and just because it's Karen's fault doesn't meant it's a bad portion of the story. On the contrary.