Nam or Namu is an issue of doctrine and unity

Nichiren never wrote Nam and despite the argument that the Japanese/Chinese rules of grammar would not support writing Nam, I am sure the Supreme Votary of the Lotus Sutra would have found a way to explain how to divorce the characters from their generally accepted pronunciation were Nam the correct pronunciation. Do you really think that Nichiren wanted some of his disciples to chant Nam and others to chant Namu? The other part of the argument is derived from the fact that Japan's and more generally East Asia's great vowel shift occurred in the 14th century. Therefore, during the time of Nichiren, everyone pronounced every Sino-Japanese character. There will never be unity in the Nichiren community unless both the recitation of the Daimoku and our doctrines are uniform. Nichiren praised Saicho for his attempts at unifying the Buddhist community and he will praise those from Eagle Peak who strive to accomplish same.