If the Hell part of BG: DiA is like Mad Max in Hell, then the BG parts like the Gazetteer remind me of the movie The Warriors, with soooo many gangs "Crews" have their turfs, either territory or professions, plus the Guild, the main Thieves Guild.
My Favourite Crews are the Revelers Union, Bloomridge Dandies, Little Pashas, Bannerless.
