Bruce wasn't Batman after Bane snapped him like a wee little twigman. And it's precisely because of the myth that Jean-Paul took over -- Bruce asked him to, because there needed to be a Batman. Like the BuffyBot at the beginning of S6.
And also, that was the compelling argument that had Bruce accepting a new Robin - that the myth required it.
Bruce is (self? meta?) conscious of Batman's mythic impact and necessity, and the writers have toyed with that. But Bruce Wayne has got the best mythic motivation of any superhero (excepting possibly Spider-Man). It's the most carefully articulated of any superhero's. Whereas the Green Lantern myth can be enhanced narratively by offing Hal, the Batman myth would be diminished by losing Bruce.
Alan Scott would SO kick your ass for forgetting him.
Dude, he didn't even have a GL corp. Besides, the wood weakness was more lame than the yellow. I never thought they did quite enough with Hal Jordan getting the nod as Green Lantern because he was the most willful person on earth, plus being a cocky rocket jockey.