Oshkosh - don't worry, the schools have been publishing this stuff for their students for ages, and openly sharing feedback questions and querrying them with the CAA if they think the question is unfair (eg reaction times of birds question now removed!). Some have instructors utside exam rooms to debrief students!
ATC nightmare, this is also my opinion (does it matter etc) and to a degree that of some schools. However this material does take time to write and there have been law suits for copyright material. Hope you passed Nav Gen (if not, any specific questions you are welcome to ask!)
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'Me here at last on the ground, you in mid air'