Is the BBC'S impact in the US growing by the personal presence of Katty Kay?

The BBC has long had a positive image in the US. Known for impartial news and high quality programs, whether entertainment or informative, it has nevertheless not been a major presence in the US. With the introduction of two cable channels, that has started to change. Yet, that is not itself enough. However, it seems that the main news anchor on BBC news America, Katty Kay, is everywhere these days. On Sunday morning talk shows, authoring a book, and speaking at conferences, she has made the BBC real to many Americans. If only there were more people like her showcasing the BBC, it would be more watched and listened to. Which does beg the question of why when one person does it so well, why are there not more people doing it at all?