Hey Ady, rewatching the trailer again, I noticed that in the shot where Leia, Lando, and Chewie run along the Bespin balcony, R2 seems to be stuck in the hallway, and you can see his back leg stop for a moment and move back and forth as if stuck. Also, in that same scene, the R2 element slightly "bleeds" onto the wall that is in front of him, which is noticeable because the wall's edge stops being straight when R2 passes behind it:

Also, is the blurriness of the running characters in this scene fixed? I know you've said a while ago that the ILM elements botched the superimposed character elements in the SE, but the blurry outlines they have in the ESB:R trailer are not very convincing; it looks like Leia, Lando and Chewie were pasted in the scene.