Maybe WB execs had seen the Shumacher directed Falling Down with Michael Douglas
WB: "Hey this is terrific, this man is tired, desperate and out on a warpath in Los Angeles to rid gangs, that deals perfectly with our revamped Batman, get me Joel on the phone"
JOEL: "Hi you wanted to see me about reinventing the Batman franchise"
WB: "Yes Joel we loved The Lost Boys and Falling Down, can you bring that same sort or edginess to Batman but still make him accessible to audiences?"
JOEL: "Of course, I'd just like to make a suggestion in that we replace Keaton with a younger stud and I'm including neon backgrounds and oiled up men in circus outfits"
WB: "TERRIFIC! welcome aboard"