A Next Batman and Robin crossover where Damian realizes the mantle is covered and begins to figure out what he really wants for himself after maturing out of the Robin role would be interesting. I mean, of course at first he'd contend Jace, Damian not contesting his right to be Batman would be out of character.
Technically there's four Flashes, one of which is the Chinese Flash Avery Ho, and by that metric there are three Batman's with the Bat-Man of China.
Damian would probably replace his father if he were ever to become Batman.
I feel like Damian would probably just size up Jace, think he's a decent enough Batman in his own right, and think both Jace and his father are good placeholders until he's ready for the mantle...
If Bruce retired, which he never will, but if the universe ever got to that point I'd want Jace to take up the role of Gotham's sole Batman. But that probably is what would happen, if they ever made Damian Batman.
That's a very strong possibility. Depends on how Joshua Williamson wants to characterize him. In Tomasi's 'Tec run he has no interest in that kinda thing anymore. But now that he's back to Robin, just how much of his father's legacy does he want to inherit?
I think that is what the people complaining about Damian getting an ongoing, but not their fave, don't quite understand.
Jason, Cass, Duke, Steph, Tim, did they have some rough few years? Sure. But DC did not try to turn them into villains in an attempt to kick them out of their mantles for the past few years.
Even Ric, which was not good, was always going to end with Dick returning as Nightwing. We all knew that.
Damian needs an ongoing to repair the damage done to him as a character and make him a hero again.
One arc here and there in Detective Comics wouldn't have been enough to fix this mess.