I think everyone can agree Arkham Asylum is a joke. Has there ever been a story were Bruce offers to build a new state of the art Asylum in Gotham? It would make sense to create a new maximum security Asylum with state of the art technology to finally close the revolving door that Arkham has always been. I know the old creepy Arkham is iconic, but it gets harder and harder to justify keeping mentally ill people in dungeons.
You would think it would just make Batmans job easier if there was a more secure place to take his villains