Well, I've got a better idea.
How about this:
Yeah, that's right. TWO Batgirls. I've said it before and I'll say it again. Cassandra Cain plus Stephanie Brown would be fun. They've each got different personalities (unlike Bruce Wayne and Dick Grayson, with the latter just being a muted copy of the former), different fighting styles, they're both great characters for different reasons, and they're fun to read. And, as a bonus, they're already friends:
Now who wouldn't want to see that?