User blog comment:GArrow101/The new Spin-Off Show/@comment-24380534-20150321044833

My top guesses would be Rip Hunter, Static Shock and Vixen. Nice arguments to support your own choices, though.

If you want to speculate further, I theory-craft a lot about the future spin-off in my own blog. Feel free to stop by and brainstorm: http://arrow.wikia.com/wiki/User_blog:San_Layn/Flashpoint_Adaptation_for_the_CW_New_Universe