Here is a summary of article ideas from this thread and from PMs I have received.
We could assign some of these ideas to the different people who want to participate. If we have a person for every idea, then we have more than enough for the NL, so if one person is late every month, we still have plenty of stuff.
These are just ideas, not set in stone. I wanted to get them all in a list together so we can see what we have.
UPCOMING BAND: an "upcoming bands" article that focuses on multiple genres. Every month find a popular unsigned/unknown band/artist in a different genre and profile for the NL.
LISTENING POST SPOTLIGHT: listening post song of the month: every month put a spotlight on a popular listening post song. bonus: some "how did I write/record this" info from the author.
GAS ALERT: highly anticipated new gear: every month find a great piece of gear that isn't out yet, and tell us about it.
MEMBER OF THE MONTH: interview a GT member, asking about their gear, practice habits, influences, projects, etc.
THIS MONTH IN THE FORUMS: in here we could include best beginner question/answer, best chord question, best theory question, highlighted gear review, most active new member. I don't think we want to focus on the joke threads, we will probably offend somebody if we go down that road (the NL has 40,000 subscribers, so there is a wide array of people), but we could still find a lot of interesting threads to profile. Check this out:
http://www.guitartricks.com/forum/showthread.php?t=20520