This is my pitching about the Nightwing right now.
After survived a bullet in his head, Dick Grayson lost part of his memory and lived a life like Ric Grayson. After use the machine that Wayne made to get his Memories back. The prodigial decide to being called Grayson: the nigthwing.
This persona is the best of Dick Grayson : Better than Batman. Agent 37. The 90´s Nigthwing. " The Batman" Nigthwing. The Owls Choosen one.
Grayson got a Carrier by himself called "The Wing" with Spyral, Checkmate, ARGUS and Star Labs tecnology. As well as Batman network and now got the Owls over his comand. Grayson become a global force. And intervein with inteligence in ponctual cases of super heroes comunity around DC universe....and multi realities.
The ideia is that Grayson would jumping in the stories of other Dc characters as a Deus Ex machina like. In a way that nobody would understand, but in his comic book the script would reveal that he is trying to save the reality itself... by his family