I don't see him beeing moe then a background charcter in Young Justice, unless DC really wants to push him.
Unless his time as Batman results in some really popular stories, I don't see DC adapting it, since they are usually using the most popular stories as basis.
I suppose I should mention the black Batman from Batman #250 (July, 1973).
Talk about condescension.
Anyways I wouldn't mind a black Batman, if DC were to stick through with it and choose the right character for the mantle.
For instance, I think there are a ton of characters of color who would be more compelling as Batman than Luke Fox:
Bronze Tiger
Mister Terrific
Steel.
Tim Fox is an underwhelming choice but I'm sure Ridley could change my mind.