I wish "The Force Awakens" meant something more. Maybe we can tie it in with Rey, with that broom-swinging kid, with Finn, and the Stormtroopers on Endor.
That scene at the end of TLJ was a missed opportunity, IMHO. The way I interpreted it, especially considering it was right after Luke died and faded, was that Luke had become one with the force, and his sacrifice opened the force to a new generation of force users. He "awakened" it within them.