In all honesty, I can see how these expressions could become cliches, but I don't see most of them as cliched expressions. For example, I think that the phrase, "desire for a scapegoat" is a phrase that probably could be used more to describe many conditions of political and social interaction. I don't hear it used enough for it to become cliched. The concept of "fatal flaw" is something that we hear a great deal of in literary and academic circles, but it not cliched in my mind because most of the time it is used to discuss thematic explorations where the term is applicable. Oedipus' fatal flaw is hubris. That is not cliched. I mean, if one is a scholar of Sophocles and attended a conference devoted to exploring Oedipus' character, perhaps it might become a cliched in this context. In an overall sense though, I don't see the term as cliched. I have not heard of the "brush out her tracks" used in any context as well as the "firefronts" inclusion to say they are cliches. Perhaps, the concept of "public servant" could be seen as a cliched expression because it is used so often in honoring so many people. I sometimes wonder why might things be so bad if there are so many supposed "public servants." One would think that things would be better if this were the case. It can be seen as a cliched expression, but might not be a full fledged one. Finally, I think that the use of the term "astonishing" is cliched. I feel individuals use it as an expression of hyperbolic proportions for elements that are not astonishing. Seeing the Alps or Mount Everest might be astonishing, hiking the Grand Canyon could be the same. Something that is done or accomplished that is of mammoth proportions could be described as astonishing. As a teacher, I am inclined to see a child who has been deficient in studies make huge leaps in schooling as astonishing. I am not inclined to see memory losses as astonishing or other events where the term is so freely used as applicable. This is my own bias coming through, but I see the term "astonishing" as probably the major one on the list that is a bit of a cliched expression.