If Bruce is starting out at ten years old, I really don't see his training being a major element. We might see some of the events that shaped his psyche and pushed him toward his future path, but the actual training period would be beyond the chronological scope of the series.
It depends how long the series runs for. I'm not sure if we truly know when Bruce begins his training, but I always thought he started in his late teens/early 20's. Perhaps the show could skip a few years. Who knows. It would be interesting if at the end of the series Bruce decides to leave Gotham to pursue his training.
Loeb and Flass were in Batman Begins, played by Colin McFarlane and Mark Boone Junior, respectively.
I'm aware. I was more so speaking for Montoya, Bullock and Allen.
I wonder who'd be good for Bullock. Robert Costanzo, his voice actor in B:TAS, would've been perfect for the character in live action back then, but he's in his early 70s now.
I always thought James Gandolfini would have been a great Bullock, but he's no longer with us now. John Goodman could be interesting. He's been known to do TV work in the past.