I'm not a fan of CGI animation, because I think it's just not there yet to give a series like this the textures it requires to set the mood. And also the animation of Batman himself is not one of my favorites. Although the series could have been better with traditional animation, the CG didn't make it worse, so you get used to it quickly. What I really liked about it is that they looked a bit around and used other lesser known villains and they went more into the direction of the Outsiders and not really the Justice League route. Also Alfred gets a bit of an emphasis on his MI6 background and they chose Katara to play a bigger role as sidekick. The stories are also quite good and are held together by a season long arc.
Overall, I can understand how a fan of BTAS might not like this new depiction, because I was skeptical too but after 3 episodes I started to like it.
Overall, I can understand how a fan of BTAS might not like this new depiction, because I was skeptical too but after 3 episodes I started to like it.