I think it takes someone with a very strong vision to adapt a book like GATSBY in which the story is not that unique (or at least it isn't to contemporary audiences) and it's all about the style and aesthetic of the language. The preview suggests to me that at least Luhrman tried to adapt that style and that beauty through a cinematic language, whether it's truthful to the book or not is not all that relevant to me. There are plenty of adaptations that have done that, the Jack Clayton film (with a screenplay by Francis Ford Coppola) uses *a lot* of the dialogue from the book and the language from the book and it's a complete disaster, I find it unwatchable actually.
I didn't like everything about the preview, too many shots of Carey Mulligan looking miserable and sad, and not enough of the ensemble. It's probably a marketing move to focus on the love story. And Roscoe, I couldn't agree with you more, Damon would have made an ideal Gatsby.
"Some people can thrive and bloom living life in a living room, that's perfect for some people of one hundred and five. But I at least gotta try, when I think of all the sights that I gotta see, all the places I gotta play, all the things that I gotta be at"