User blog comment:BeastTaemair/Amazing cross-over/@comment-1330227-20140521011105

I could definitly see Hourman since they had a guy writing a pilot. I never heard anything about an Hourman pilot script being handed in, so they might be planning to turn it in for next season. I could also see Katana being brought in for Birds of Prey. Another Birds of Prey option that would work with your Batman idea would be Batgirl.