Dickbats would have been so much more interesting. He'll have a much more personal history with villains.
I feel like Damian will just be a slightly grimmer version of regular Batman.
What also sucks is they'll probably have a bunch of regular Batman villains even though this will take place at least a decade after the current time.
I also just hate the idea that Batman, a hero with no powers needs his successor to be genetically related to him despite having essentially several adopted sons who aided him.
Eh, I think when you look at the extremer and darker direction the Arkham series in progressively, I think Damian would make more sense than Dickbats. There were times where it just felt like you could tell they wanted a Batman who would break necks, literally smash skulls, and run down enemies for real without some silly electric device thingy that shocked them.
The villains thing is a good point, but I actually think, if this happens, they'll probably do less of villains that are directly old Batman's rogues, and more rogues based on said rogues, spiritual successors if you will, somewhat like Beyond. Though they could do just twisted and nastier versions of original rogues I guess. Like a Two-Face who has been overwhelmed so much by the evil side he's completely disfigured his whole body, or a Penguin that's became so obsessed with birds he's genetically altered himself to be actual half-penguin or some shit like that.