Wow, that surprises me. I think she'd be perfect for the role and I'm
surprised (assuming the rumor is true) that she would turn this down.
Especially after she agreed to do WW's voice on the Justice League DVD.

As far as who does get the part, if it's not LL then I'm hoping for an
unknown, athletic actress.

Of the ones that article put on their top list:

Charisma Carpenter: I liked her on Buffy but I'm not sure I can
picture her here.

Priyanka Chopra: She's pretty and I don't know her. If she's
athletic then she'd probably work for me.

Megan Fox: same as above, except she seems kind of young

Morena Baccarin: seems like a good choice to me

Evangeline Lilly: She's OK but too well known right now IMO.

Cameron Diaz: Dear god, NO!!!

Denise Richards: again... dear god, NO!!!!!