Laurel is imo one of the better characters in the show. Her sister dies and how does she handle it? She hears about a girl in her AA meetings talk about her abusive boyfriend, realizes this is the kind of thing her sister would usually handle and so and Laurel decides to handle it herself with zero experience in the field and understandably gets her ass kicked. Then she starts taking boxing lessons which any normal person could do, she doesn't get any extraordinary training. Then after Oliver dies and the rest of the team quits, how does she handle it? She puts on her sister's mask and decides to protect her city with virtually zero field experience and certainly zero wins at that point. And what happens? She gets her ass kicked, over and over and over again. And every time she picks herself up and goes out again and she slowly gets better.
She still has her ways to go but imo she has one of the more interesting story arcs.
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Out of all the villains to bring back, they bring back her??? 
my god i really starting to hate this show