Reason I said Ewing is due to him already having a good understanding of the character and showing it Ultimates. So he would be my first choice to nail down America's voice. Then again I don't subscribe to the idea that minority characters can only be well written by writers similar to them, Sometimes it can add a new voice and work well then others like this book is a prime example of that failing.
Out of curiosity which Latina writer would you up on this title if you could redo it?