12 issues was the same minimum number lurking in my mind. I'm disappointed because I've really been enjoying this incarnation of Barb. The first arc really set the stage with some good characters and possible story elements; and it would have been fun to see how they played out.
With the King Tiger mini series wrapping up next month, this does leave Barb Wire as the sole representative of the CGW/Black Sky realm. After she exits, it's going to be a barren landscape if no other news appears.