Not even batman`s superfriends want anything to do with Gotham...you got the Damn justice league stopping wars in the middle east and outer space but not once you ever see them volunteer and purge Gotham....Gotham. Not even the likes of Bumpy Knuckles would take on the likes of The Joker, Bane, Two-Face, or Killer Croc.
Even dikk grayson moved away