Loge raises an interesting question: how far is it legitimate to take the "punctuation may mislead" device? If it is legitimate to capitalise a word in the clue (other than the first word) to suggest falsely that it is a proper noun, is it legitimate to lowercase a proper noun?
Be that as it may, when I have set puzzles I have constantly had to remind myself that I am working back from the answers, and that what looks to me like terribly clever wordplay may not be of any use to a solver who is trying to work the other way.
Sandy Balfour (qv) quoted the Times crossword editor who said: "Crossword setters are entering a game in which the point is to lose gracefully."