VFR at night
Is this not another case similar to that of teaching 'instrument appreciaton' as part of the PPL syllabus. If you teach it, people will use it. Part of the CPL syllabus is a night rating but it doesn't mean it's a good idea!
A well respected scottish engineer has warned me in the past and I make no apology for quoting his words of wisdom
"Remember Martin, bats and twats fly at night!"
Hope thats not too rude for the moderator.