I have complete faith in the team behind this movie - J.J. Abrams, Kathleen Kennedy, and Lawrence Kasdan.
J.J. idolizes the Speilberg-Lucas 80s classic blockbuster kind of movie. Super 8 was done in that style. His Star Trek movies were more Star Wars than Trek. He is great friends with his long-time composer, Michael Giacchino, who worships John Williams.
Kennedy is Speilberg's long-time producer - having produced the movies J.J. loves like Raiders of the Lost Ark, E.T. the Extra-Terrestrial, or Jurassic Park. Not to mention other Speilberg-produced movies that he did not direct but also carry that same magical vibe like Back to the Future, The Goonies, Gremlins, and Who Framed Roger Rabbit.
And then Kasdan as screenwriter? Absolutely fantastic news! He wrote The Empire Strikes Back!! The best Star Wars movie, period. And one of my all-time favourite movies in general.
The story is George Lucas', just like Empire Strikes Back and Return to the Jedi were although he did not write or direct those entries. Lucas is a good creative force, but in recent films he's surrounded by yes-men. He used to have producers that would challenge and question him. But as the prequels show, when he has free-reign it is no good. Here, he's limited to just idea conception and approval. So, I think things should be fine.
John Williams on board for music. 'nuff said.
And then Disney. They've done great things with the Marvel Cinematic Universe and they have shown a great level of respect for Star Wars in their theme parks over the years.
Really, this movie is going to have to try really hard to be bad. It has everything right going for it.