I liked it, since I don't much care for the novel and I think Luhrman's stylistic excess probably matches the prose of the book pretty well. Also, Leonardo DiCaprio's greatest talent (?) is his general aura of blankness and vapidity, which fits the character.
But it did seem to me the trailer was missing something. What could it be? I wondered. And then, like a bolt of ecstatic truth straight out of the abyss of the past, it hit me! Werner Herzog!
Because everything is better with Herzog.
And so I present to the world, "Herzog's Gatsby":