WW can look "cool" on the screen, yet she'll never look "reasonable". Idk about you guys but I think her costume is a little dated. If I saw a chick wearing granny panties that are blue with stars on it, I'd think that her costume was made out of an old American flag she dug out of her attic and couldn't sew for her life.
If they revamped her a little bit then she'd definitely work. Make her sexy instead of the beast she looks like in some comics (am I right or am I wrong, does she not look like she's more butch than some of the guys on the Justice League every so often with the scraggly hair, mannish face features, and the muscles to Tuesday?)
But even so, GL, Superman, Robin, Joker, etc were all awesome on Grayson.