I can see Tim becoming the next Bat. Or Damian. Dick? Not at all. He'll carry the mantle for a minute when he has to, but he's his own man. That's been a huge part of his character for a long time. I'd see him permanently taking on the Bat cowl as a downgrade. Sure, Batman is a bigger name and always will be, but Nightwing belongs to Dick. He doesn't need Bruce's hand-me-downs. He just needs DC to let him be as awesome as he actually is, and stop knee-capping him.