If you watched Star Wars Episode VIII till the end, you the notice that there is a kid in Canot Bight that can use the power of the Force. This could imply that the power of the Force does not come from the blood.
The latest trailer for the Star Wars IX, it is mentioned that this would be the last Stars Wars movie for a while.
What if Star Wars Episode X starts with the little kid shown in Star Wars VIII as a main character? Star Wars IX would be the last movie in saga. It also feature emperor Palpatine and Lando Calrissian. The new Star Wars franchise would probably start with a whole set of new characters and new story direction.
I am going to assume that this kid will appear in the end of Star Wars IX.