One thing that always bugged me in ESB has finally been corrected !
At one point when Han, Leia and company flee into the asteroid field, we see a shot from the cockpit where two asteroids collide in a big flash. In all the other version prior to the DVDs, the cockpit's position changed dramatically in the screen. Now it stays exactly at the same place and I'm pretty hapy about it, even if it's only a very minor correction.
However, one thing they have changed that bugs me, is the fact that they have overly saturated the scenes with Yoda. I suppose they did this to make him look even greener like in the prequels, but by doing so, Luke's shirt also looks green so do the trees in the background.