Truth.
Coleman Reese starts out selfishly trying to blackmail Bruce.
That fails. He goes to the television.
This puts his life in jeopardy.
Bruce saves him.
There is an understanding that Reese will now keep the secret, appreciating the hero that Bruce is more than his own selfishness.
That's pretty clear.
John Blake:
He's a hothead who jumps into trouble! He believes in the Batman!
He gets promoted to detective because he's a hothead.
He tries to get Batman to come back.
He loses his faith in Gordon.
He keeps trying to help people.
He realizes playing by the rules is getting everyone killed, I guess?
He throws away his badge.
He finds the Batcave so he can be a hero.
That's sorta clear I guess. But it takes fifty freaking scenes, most of which don't advance this, in order to get him there.
Maybe his arc is clear enough, but the execution is buried underneath him being used as a plot mover.
He would've been more effective without all the mundane stuff.