Fans asking Gail Simone about the possibility of her doing a new DC/Veritgo series on her Tumblr page received an answer that sounds quite a bit like something was and may be in the works from the Birds of Prey and Batgirl scribe -
“What an interesting question. ;)
It’s almost happened several times, but it didn’t work out, in the past.
That’s all I can say at the moment!”