Alright, by my last count, we have eight interested players, not counting those on-the-fence. That should be enough to warrant turning the thread from a concept thread into an application thread. However, I won't do it until we've narrowed everything down, so let me see if I've got this straight:
Continuity: One month after the events of The Dark Knight, close to eight months following Batman Begins.
Characters: Players can choose anyone from Batman continuity such as Batman himself, The Joker, Crispus Allen, Michael Atkins, Commisioner Gordon, and others, regardless of medium exposure and obscurity. But there will also be the option of creating custom characters, be they vigilante, villain, or GCPD officer.
Guest Policy: None. We're focusing on Gothamites and Gothamites only, with small mentions being permitted depending on their context.
Additional Rules: * All previously unintroduced characters (IE: Those besides Batman, Joker, Two-Face, Gordon, Scarecrow, ect.) will have to be modified to accommodate the world of the Nolan Batman movies. This includes the option to defy strict continuity and take up characters like Nightwing and Azrael long before their mythologically canonical introductions.
* As said, Gotham City is to be the focus. Characters with outside involvement such as Ra's Al Ghul and Deadshot (who was introduced as a Batman villain) will have to come to Gotham in order to be rendered playable.
* Customized characters cannot be anything completely randomized or extreme, such as the long lost twin brother of Bruce Wayne or The Joker's nephew twice removed. If at all possible, custom characters should be avoided to be in direct relation to others, unless previously discussed with the player playing said character.
I'll update this post as things are further narrowed down.