>>150386597
To add to this: The ending of Batman Returns specifically is weakened by Batman not following his "No kill rule" in the film. Bruce is trying to get through to Selina so she doesn't cross the line by killing Shreck, but what would this Batman care since he's already killed a couple of Penguin's gang in the movie? Why would their relationship change if Selina kills Shreck just like Bruce killed the fire eater or the burly clown earlier in the movie with the bomb? I feel like the "no kill" rule was implied in the script phase, but Batman lighting the fire eater up and blowing up the burly clown were something that came up in the storyboarding phase that contradicted the script.
That was also a thing in the first Batman: All the scenes where Batman killed Joker's goons didn't come off as something in the screenplay, but something concocted by the storyboard team after the fact planning the action sequences (explosion at Axis Chemicals, machine gunning Joker's goons on the parade float, the henchman Batman drops down the bell tower, etc). Knowing that Sam Hamm didn't finish the script before filming started (1988 WGA writer's strike halted his ability to finish the script) adds credence to this, Hamm's screenplay basically ends with Batman giving Vicky the chemical combinations to SmyleX. Burton, Keaton, Nicholson and the production crew basically had to make everything else up (and it kind of shows).