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This is an interesting question @MattJuniper – I discussed with @zee. Although the official CFA stance is that you cannot be penalised for a right answer, I recall having read somewhere that if, for example in the exam they asked for 2 points/answer, and you gave 5, they will only look at the first 2.
So do include anything reasonable if you are confident that they are not wrong. But if they explicitly asked for X constraints, only write X amount of that since any extra won’t be considered anyway. This makes sense to me to avoid candidates writing a whole essay, and helps you focus your answer to the more ‘obvious’ ones.