First off I need to fix 2 errors in the article 1, Grayson is agent 37 not 13 and 2 he didn't "abandon" the nightwing title he had to leave it after being unmasked and killed in forever evil, Bruce told him to stay dead and so he did. For a bit until he went to see everyone from his past. MOVING FORWARD, I don't think Grayson will become nightwing again because the world thinks he's dead he can't go back to being nightwing, MAYBE Damian but Damian seems like the kind of person who wants their own title and own legacy he probably doesn't mind batman well because that's his father and as far as Damian's concerned he's not another Robin he's THE son of batman. if you guys haven't seen it yet there's a sneak peak at the beginning of issue #2 of Robin war where Dick, Jason, Tim, and Damian are in a subway tunnel with A LOT of robins. Dick is telling them that they were besically gonna train them in everything they need. So with that in mind as well I don't think Damian or dick will take up nightwing.