Kennedy should be fired for her failures but in her defense Star Wars has been going downhill for a while. Lets not forget Luca's prequels in the late 90's early 2000's were probably only the 4th biggest sci-fi/fantasy franchise of the time after Lord of the Rings, Harry Potter and Raimi's Spider-Man.
I disagree with not expanding the audience. Kennedy's failure to expand the brand overseas especially China is another one of her great failures. Star Wars continues to lag behind many other franchises overseas box office. But you can expand the fan base without alienating the old fans. Look at how Marvel's box office grew not just domestically but overseas as well the past decade.
Kennedy cannot be blamed for China because China has never been interested in Star Wars in the first place. You can place a lot of the issues this trilogy and this franchise have come across on the shoulders of Kennedy, but China is not one of them. Marvel's advantage is that for the most part they are introducing what are essentially new characters to people. I'll guarantee you most people who went to see Avengers have never once picked up and read an Avengers comic book. So, for all intense and purposes Marvel is creating original characters for the masses . The truth is Star Wars had nowhere else to expand to, and Iger should have known this before buying it from Lucas. 100% misguided to point fingers towards Kennedy here, this was Iger's miscalculation.