If Sam Hamm and Bob Kane got involved in Batman Returns, Tim Burton's Penguin would've just been a one-dimensional lame ass long nosed fat Al Capone rip-off Mobster in a tuxedo with trick umbrella's but nothing more deeper and Catwoman would've just been a jewel thief that steals for no goddamn reason, although the thief incarnation can work with the right origins. Sam Hamm's early draft for Returns had the plot of Penguin and Catwoman stealing hidden gold beneath Wayne Manor, had Robin and Bruce Wayne marries Vicki Vale. That would've been horrible, good thing Burton rejected that draft and wanted Hamm completely out of the project plus they got someone witty like Daniel Waters to write the screenplay.
I think Tim Burton's Scarecrow would've been f'ing brilliant and also Arkham Asylum. 

 Just f'ck WB for firing Burton because of silly things like McDonalds and ignorant soccer moms but karma got back at them when Batman & Robin become a flop. 

