In addition to what Anaris said, reporting the assassin's name is not a good idea. You may not know who did it. It also completely invalidates the "plausible deniability" aspect of infiltrators.
I agree with your intent, but he specifically notes "in the family history". Isn't that information only available via user info page or to yourself upon logging in? Unless you have two characters in the same realm, that info isn't going to do you much good.
The only information being reported to where it can be immediately used is that the victim has died (and how).
