You'd probably figure that the only thing a Grand Theft Auto inspired role-play could offer is a shallow action driven experience that attracts those that play the game for the deranged thrill of mowing down a vast number of innocent citizens, but keep reading. I've actually tried this once before and the only reason it didn't work out was due to all the participants becoming preoccupied with schooling.
So, all that said, the idea that I have would have a solid plot and world for you to enter into, but it would be very much dependent upon your character in order to move the story forward (it's also worth noting that I would want there to be some form of subplot for each of your characters to be involved). The world we'd enter into is the HD universe in 2009 after the events of GTA 4, GTA: Episodes of Liberty City, and (shortly after) GTA: Chinatown Wars and will find us playing the roles of inmates at the Alderney State Correctional Facility. Liberty City's underworld is in turmoil after many of the leading criminals in the city have been either murdered, put behind bars, or their gangs have been disbanded and after our characters manage to execute a jailbreak they find themselves smack dab in the midst of it trying to work through their own problems. If you'd be interested in joining just leave a comment below and if you already have an idea for a character than feel free to include it (I'm not looking for characters that are "godmodes" or too over the top).