''Oh, Cedric, whyíd you go into that maze?
Havenít you ever seen a Hollywood movie before?
In which a minor character gets slain
To benefit the survival of the big star?
Itís such a cliche...''
—The Whomping Willows, "Cedric Had It Coming" - talking about the former trope namer.
You canít just kill somebody to kill somebody. It has to sting for the audience, and it has to sting for the other characters.