Yeah I don't see them working. I just thought it would be an interesting move on DC's part. The Authority has certainly come crashing down. I have the first two trades and that's about it. Other than them I don't think I'm really interested in any of the Wildstorm titles.
The Authority is a property that can only work for a short period of time and then only under certain conditions. They need to exist in a universe where they can actually change the Status Quo (which they can't do in the DCU) and also once they've done that - what other stories are there to be told about the characters.
I think the concept has had it's day and gone.