My memory might be a little foggy but didnt' the Proclaimers video show the GB commenting on the minutia of the magazines like the selecting the cover? ("The picture of the delcious looking red apple ...")
I'm particular interested about who originates "new light". The newer WT are making it very clear that this does not come from the anointed. I know in the past that it was understood (if maybe not entirely accurate) that the anointed around the world write into the Society was "new light". Does the average member of the writing comittee have personal liberty to suggest changes? It seems that changes in the teachings in the literature trail after members of the Governing Body have already presented this in the semi-private speaking circuit (Gilead grad, annual meeting, special speaking engagements.)