Everyone has one or two C or D listers that they love and think they could be great if they just got used a little more. Who do you think with the right push could really take off?
For me it is the Nu52 Firehawk. She had a great look and powerset. Plus another high profile international hero is never a bad thing to have. Outside of Crimson Fox I am hard pressed to think of any other French heroes. She would be great on a Justice League team.