Originally Posted by
Carabas
They absolutely could have but they really shouldn't have.
You don't spend 5 billion on a franchise and then handcuff you to 15 years worth of soap opera plot that the fans already have read.
Also, I don't think the Thrawn trilogy translates well into a 6-8 hour trilogy of movies.
What mess that is coming after Episode IX? I don't get it.
And why on earth would the actors know how the story is going t play out? That's just begging for massive plot leaks years before you even start to make the movie.