Actually, he wasn't done with them. They end up playing a fairly significant role in the big concluding arc. What he would have done with them beyond that, we'll never know. DC jerked him around with War of the Gods and he got disenchanted. He concluded his big story, did his final issue (which was both epilogue and farewell, literally, as the Fourth Wall is broken and he addresses Diana, directly), the book was taken from editor Karen Berger, and moved into a more mainstream, traditional superhero, and, IMO, blander, direction.