Ledgers Joker was great and everything but I found it very forced and kind of annoying the way he had a speech impediment. I think I like this one better. They both have very different bone structures it seems. The costume designs in this movie look very well done. Margoe Robbie is perfectly cast IMO. And poor Will Smith - he's getting bashed everywhere by comic book nuts, but he's a great actor, I'm sure he'll be perfect.
Trailer looks good, so I'll definitely go see it.