Again I ask, what does any of this matter to anyone's game or what will be presented in F&D? What does it matter that in the movies they were the only ones? Especially when canon gets changed regularly, as is the case in the EU before it became legends and in the current canon with Kanan being around when there "aren't supposed to be any Jedi". How many more times is canon going to be adjusted in the future? Why hold so tight to such things?
How will they fill up a book? They will give you the tools to play Force-users of many stripes because that is what people want, albeit aimed more at the light side of things as I think they will leave dark side stuff to a later supplement, much like an Empire supplement. They want to play Jedi, Nightsisters, Imperial Knights, and on and on. What does canon have to do with the game which regularly breaks canon as a matter of course. The movies are only a reference point, not the be all and end all.
This should be written in large letters in red ink on the inside of the F&D cover.