Haha, no sir, I just wanted to specify a more distinct role for him, which is also the role I think he'd be most perfect for.
Harley Quinn- Kristen Bell (although I don't know how well she'd fit with this cast), Zooey Deschanel, or Joey Lauren Adams (I get a lot of flak for this, but I think she'd be perfect, despite her age).
Catwoman- Eva Green is my #1, with Rachel Weisz a close second.
Poison Ivy- I'm not too sure, but my gut says go with Anne Hathaway, if not, then Eva Green.
Black Mask- Clive Owen for a more cerebral, hitman-man type, or Michael Madsen for a more badass mobster, psycho type.
Mr. Freeze- Patrick Stewart I could see going for a more faithful Mr. Freeze, or Daniel Craig for a more vengeful, angry, kill-'em-all type of Freeze.
Just to add, I'll also fill you in on some of my other choices:
Talia- Rachel Weisz is the obvious choice for this one, for me.
The Riddler- Don Cheadle for a more arrogant, serious, ******* type. Andy Serkis for a more creepy, sociopathic type of character.
Bane- Mickey Rourke. Hands down.
I don't want to see Hush or Mad Hatter, as both are kind of ******ed characters in my opinion. I never cared for them much.