I think I could put a nice touch on Mr. Freeze. I would be the total opposite of Arnold in Batman & Robin; instead of loud and flashy, I'd be much, erm... "colder" emotionally, much more reserved and calm.
Because I've always thought Mr. Freeze would be like that; he spends all day in an environment no one else can survive in, with only a dying wife for company... I've always thought Mr. Freeze would be socially inept and stunted. I'd almost play him Aspergers... comitting crimes to get what he wants, but not knowing how to interact with other people...
Why yes, Mr. Freeze has always been my favorite Batman villan, how did you guess?