Depicting Arsenal with a cap seems popular. I'm trying to make mine with a hood like in the show, which requires some modding of the Heroclix model. I haven't done any painting for a while but I'll get it done and we can have another game.
In the comics she doesn't use a weapon and her Canary Cry is her own voice rather than a device.
Currently Arrow, Arsenal, Huntress and Canary come to 326 Rep and $600. That means you miss out on Agent Ron (the one with the gun) by 1 point. Which is annoying.