I kept waiting for it to be anything other than nicely executed and completely pointless CGI recreations of the original concept art, but it didn't happen.
What they did was nicely-produced even if it doesn't feel like a full trailer. Of course, if they wanted to make it like a true 1970s movie trailer, they need a voiceover guy who explains pretty much everything that will happen in the movie.
Tangentially-related: I liked the Ralph McQuarrie Star Wars concept art Hot Wheels cars that Mattel put out last year in the Hot Wheels "Pop Culture" premium line.