I think some of you have missed the point that SKIIDRIVER is making.
Most of the PAX are very familiar with the CLAS 2- With Exposure Take-off profile. I think what he means if they are going to be subjected to something substantially different (and a CAT A Helipad Profile is) it would benefit all if an explanations was given.
I see on the other thread a GH man has described their profiles and although he does not state so, they sound very similar to Class 2 with Exposure.
Its common sense at the end of the day, if we are about to do something strange (or already have done so) letting them know why!!! might save us a trip to the Chief Pilot with a book down our pants when the PAX have filled theirs, and bleated to their managers about it.