To the translator with regard to your request for comments on putting notes in the margins of the pages-
It is rather distracting and frankly, annoying. When I see text in the margins of a page I am usually expecting notes about the work of translation, like a clarification of a specific subject, an explanation of a specific translation decision, or some information about something like kanji being read in a specific way.
Running commentary from the translator is better reserved for the credits page at the end. When I am reading the manga, I would like to read the manga, not the translator's color commentary.