Yea, I think this film will have alot of elements from the Long Halloween, We all know begins was heavily based off Year One, with Carmine Falcone and even the bat caller thing in his boot, So im guessing TDK will continue the mob story but also introduce alot of new characters like TLH, and also bridge them into the next film... Nolan already introduced us to alot of famous Batman Villains Ra's, Scarecrow, Za's, Joe Chill, Falcone and corruption everywhere, I think this movie will draw from the Long Halloween in the sense that THE FREAKS will start appearing alot more, like popping up as a reaction to Batman, I still believe the Harley rumours, Mr Mike Engel.... Mr. E,,, mystery.. The Riddler... you know the reporter, and the whole Selina Kyle thing..... so I think he's trying to develop Batmans world in the way its portrayed in TLH compared to Year One,, this movie is like a rise of the freaks Im guessing the next one the mob will be done with.
Just my thought on it ,,, and yea also No Holiday but Joker is who the triangle of Bats/Dent/Gordon will be trying to uncover/understand and cope with,, cause as Nolan said he will be random a force of nature and all anarchy,, so Batman willl be doing detective skills to find out about the Joker who would be alot harder to read than a killer who kills on holidays.... oh and he will round up Arkham inmates and Crane.