I will say this once again, and hopefully this will be the last time.
The characters are not her property. She cannot write and publish stories with the RepCom/ImpCom characters without permission. Which she will never be receiving.
If the story is ever written, it will be by another author. That's the end of it. Stop complaining about TCW being the end of the series, because while it is an opinion, that is not fact. It has never and likely will never be confirmed as a reason for the end of the series. All we know for sure is that Traviss had disagreements with Lucas' publishing, and she left Star Wars.