Amazing trailer, Ady! The Cloud City shot looks extremely well done, as does almost everything else in the trailer.
However, I do have some small nitpicks.
In the shot of the balcony, Lando, Leia, and Chewie's outlines are pretty blurry. I'm sure this is ILM's fault, and not Ady's, but is there any way of making their outlines a bit more sharp?
In the shot of the Hoth soldiers lining up with their guns, the new background looks just a bit too much like a matte. Maybe add some subtle shadows or something to make it a little more three-dimensional?
Other than that, absolutely perfect trailer. I was kinda looking forward to seeing the lightsabers not flicker at all, but the way they look in the trailer is most definitely an improvement over the way they looked and flickered in the original movie.
Also, how come you decided to remove the TIEs firing in the trailer? I liked that addition.