The thing is, it would be cool for comic book fans, but for the average moviegoer ...
I think you'll hit all audiences if you crossed over with the ladies of Top Cow! Worship the Cow!!! MOO!
Before CGC, I used to peddle these books and I still have plenty to put out there if I ever found the time. Darkness is definitely a comic to movie potential and I wish they had picked someone a bit hotter, and closer to Michael Turner's visual depiction of the Witchblade, instead of a "manly" actress, who can act, but doesn't look the part... Denise Richards comes to mind as my Witchblade....Eliza Dusku or Jennifer Love Hewitt as Fathom/Tombraider as well!