I've come to this conclusion that JW will probably score it.
If I was 81 years old and not knowing how much time I have left, I'd score these movies as long as I could as long as I'm able doing it. What else does he have to do besides the occasional Spielberg movie
Also JW probably knows SW is his biggest franchise legacy
I also think JJ abrams would ditch Giacchino in a heartbeat if JW wanted to score one his movies. He probably even asked Gia to score Super 8 to sound similar to E.T. Gia is perobaly a second choice to Abrams for not having JW like Spielberg does