Batman giving up being a vigilante to put his money to use reforming Gotham because he realized it would be a better course of action and was needed to save the city would be an interesting intellectual exercise as well, but it would still be a misuse of the character. And yes, that's a hyperbolic example, but Lois Lane as a character was synonymous with being a hard nose, tenacious reporter as much as Batman is with being a vigilante.