So far as I understand, the number of regular subscribers is not very satisfactory. Back To Godhead is being distributed by individual canvassing only. So if that is the position, then there is no need to publish something which is not pure Krishna Consciousness. Purely Krishna Consciousness means as you have published the article Isopanisad, and similarly we can publish all the Upanisads, the Vedanta Sutra, and many similar articles. The articles like Dr. Spock, the Beach Boys, or nonsense book reviews should be completely avoided.
Letter to Rayarama, 9 February, 1969