I think a LC magazine would be a great idea. Monthly for sure. Include all the items you mentioned plus

highlight different LC plans-one each month

not only where to find but real research on the lest expensive places to buy (include shipping in total costs)

interviews with doctors and other medical professionals who support LC

information on how to make this a lifestyle; not a way to lose weight

information on addiction-some of us are addicted to carbs and have a very difficult time accepting it

carb creep and how to avoid it

just read the posts in forums like this and you will have all the issues to address in articles you will ever need.