I like the idea of having boards for the discussion of "real history" and boards for the development of a story too. That way, both types of interests are given a chance to flourish.

I only have one suggestion: wait until the series of Rome is over before starting any fiction writing/RP. It would be quite awkward if the RP has Pullo marrying Vorena Major if the girl falls into the Tiber before the end of the series... or something. (On the other hand, the show has taken a few liberties with history that are a trifle difficult to deal with... like Octavia not having a son by Metellus and what not.)

So what are you going to call the group? Rome? *LOL*