You know, the one thing that I'm very curious about is how long they plan on having Bruce going down this route of being a "vigilante" at this stage of his life.
Because the longer he stays in this role, then he's bound to grab the attention and collide with a lot of the major players in Gotham.
And since they can't have him actually put on the "Bat-Suit" yet, then is he just going to be known as this Proto-Batman until he actually makes that phase towards being Batman? I mean, if that ends up being the case then what difference would it make for Bruce to suddenly adopt the signature of a Bat when everyone is familiar with his vigilante persona? The biggest reason why Bruce adopted the look of a bat was to strike fear into his enemies and one of the reasons why it worked was because no one knew who Batman was at the beginning of this career.
However, if Bruce makes a name for himself as this "Dark Knight" vigilante then people would automatically know that Batman and his proto guy are the same person....unless Bruce's "Dark Knight" is presumed to be killed at a much later point in his career, before he adopts the Batman persona. But even with that route, if they tried to approach it where Bruce wanted to make everyone in Gotham think that Batman and his proto-Dark Knight persona were two different individuals, that would still take away the value of Batman being considered as the first real vigilante of Gotham City.