Katana's style oozes inspiration, greatness, and righteous awesomeness.
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As presented in Suicide Squad, she has a major life goal she has thrown her life into and she is ready to hack and slash her way through everything that gets in the way.
Her ideals bring into question the mediocre pursuits of the world, and she pursues her commitment with steely resolve that makes me want to see more! Her character wakes me up and inspires me to look at things that are beyond my familiarity or even understanding.
Many of the DCEU characters have wrestled with their ideals (Deadshot with his daughter, among others), but they seem to be keeping them at arms length. Katana is crazy and willing to dive head long into them. She is up front about letting people know that even while she is comfortable having a drink with the villains, she's not blotting out the searing cuts she has emblazed into her soul.\
Katana is an untapped mine of interesting stories and surprises waiting to draw in long time DC fans as well as broader audiences who see themselves stumbling through their days half forgetting what used to drive them.