Every single green Lantern that has had their own book is an Adult male. All of the Lanterns from Earth have been Males. I would of like to see something different, and making him Arab doesn't make him different enough in my opinion.
A girl Green Lantern could have been interesting. A lot of the coolest Lanterns in my opinion have been girls and I would of liked to see a new Human female lantern.
What I have never understood is that there really should be some more young lanterns. As far as I know there isn't an age requirement to over coming great fear. Green Lantern is the only Big franchise DC hero left out of all the young heroes, and as far as I know there has never been a green lantern in the Teen Titans or any young hero group. Now if they took the current new green lantern and made him 16 or something around that age I think it would of been a lot more interesting then just another Lantern. So ya that's why I think they messed up on the new lantern and I would of loved to see a teen Lantern on the titans.