Re: Would Richard Grayson be part of this movie?
The reason why Grayson is the best male sidekick is due to his relationship with Batman.
Dick is Bruce in nearly every way. He's a reflection of Bruce. Both of their parents were killed due to crime. Both watched their parents die in front of them.
There's a deep connection that Bruce & Dick have that Bruce doesn't with the other Robins. It makes sense for Bruce to take in Dick.
If we have Batman having Jason & Tim, it would make him look like a pedophile if he keeps taking in kids.
Just have him and Grayson. Also Barbara. Just have the 3 of them.