Agree.
The stunt choreography--that's subjective. Personally I thought it was all great. Chad Stahelski worked on the stunt choreography and he's exceptional.
Black Canary was underused, but maybe they wanted to hold back so they had more material for her own movie (were that to happen). I can extrapolate from what was shown to how she ended up going in the opposite direction from her mother. Her mom got herself killed and she probably resents her mother for that. Lots of people end up falling into the same criminal gangs that victimized their families.
I knew that the movie wasn't going to be like the comics--you could already see that in the trailers. I always watch movies as different creatures from the comics and don't go in expecting any fan service. So when there is stuff from the comics, I'm always pleasantly surprised. I didn't expect all the call-outs to the cartoons and the comics--and when they happened that put a big smile on my face.
The opening of the movie was something I had been thinking should happen, not expecting them to do it. It was how I wanted the movie to open, so I was giddy seeing they had the same idea as me.
spoilers:end of spoilers.
talking about the animation sequence