If you're willing to forgive some unbalanced character development then you'll have a great time with this first season. Justice League is a very entertaining show that any fan of superhero animation should not be without.
Justice League's frank and honest discussions surrounding relationships, trauma and loss deserve to be commended. The series was very adult when it wanted to be... but it served a purpose in creating a show that catered for all ages.
Unfortunately, like many Season One episodes, the storytelling is largely superficial. Fans expecting more would have to wait for future episodes, when Justice League would develop into a far more engaging series.