Alderaan said:

I'm warning you guys, don't get your expectations up. The trailer is a window into the filmmaker's mind and what kind of story they are hoping to tell. All indications are that the story in this film will be poorly fleshed out. The characters will be kind of just there. The movie will be a sleekly produced but vapid Revenge of the Sith meets The Godfather Part 3 meets standard Hollywood blockbuster fare.

I seriously doubt that Abrams had a big say in the making of this trailer. Since when was movie trailer a "window into the filmmaker's mind"? It's almost exclusively been a reflection of current marketing trends. I mean just look at the old SW trailers; they couldn't have been more 70's and 80's. The original ANH trailer was trying to sell the film as some moody space mystery film, because space opera's weren't really a popular thing back then (not yet anyway).
It is a very rare thing to see a trailer made by the filmmaker himself.

Btw, here's the trailer for The Empire Strikes Back. It has zero dialogue from the film in it, no plot is mentioned what so ever other than what the title implies, and it is filled with shots of explosions, spaceships, and aliens.
"A big sprawling new space adventure."