A good first season. It kept me engaged by pulling an Arrow trick - having stories from the past and present running concurrently.
It also addresses alot of the questions I always had reading superhero graphic novels. The non killng code, how being a superhero would affect their lives, how much is non interference justified when you have so much power and how inaction is unjustified.
Some of the plot points didn't make sense but I am willing to overlook that. I look forward to season 2 and hopefully see what caused the break in the Union of Justice.