Catwoman is a really fascinating character! I think she has something we all have, she is not a "completed person". She has doubts, she has uncertainties... She is until more "human" than Batman is. In fact, Batman sees black or white. Catwoman sees the gray... :D
They should just merge her with Starfire, really I don't see the purpose of the character, other than to be "HEY LOOK BRAZIL HAS A HERO TOO!!!1111!!"
Honestly, I think you can be rigth, because, as a brazilian man, I don't think Fire is a genuine brazilian character. The people who created her doesn't know anything about brazilian culture, so the result is this: a woman with super powers but no identity!
By the way, I think it is a really interesting thing. I read 52 series and I see Fire's appearences there, and it made me happy. It was really good to see her, in an important story, acting with the famous super heroes... This is a sign (for me, of course) that the writers think she has something special.