I got this strange idea about a possible community writing project. I am not at all sure if this would be an AAR or a CW, simply because I don't think it has been attempted till now. Here's how it would work.
The base setting is a campaign that I am playing on Attila right now. I just got on an interesting campaign that has made a really unique start - Danes settled on Crete and Eastern Mediterranean. And then the idea came to me of how this could be used for a open writing project. I will play the game every week or something, and post update of what happened there. And then anyone who wishes to participate can write chapters about life and adventures of people in the faction. Participants can create one (or two) individual characters that only they can use as they want, and make many other open characters that anyone can use as per their creative discretion. Writers can also get into the campaign as the faction government council and influence how the campaign should proceed further.