After seeing what you were able to achieve in ANH with the new death-star reveal got me thinking how cool it be to perhaps see a brief shot of giant Drop-ships carrying AT-AT's and ground forces deployed from the Star Destroyers and head toward the planet.
I have no idea what such ships would look like, but theres probably some sort of visual reference floating around in the EU, besides it'd give your CG crew a chance to be creative and add a new ship design to the series.
Luke's escape from Hoth always seemed a little too easy to me , how did he manage to avoid running into the Imperial blockade that all the transports had to escape through? or did he wait until the battle was over and the Imperials had packed up and left?
Maybe you could insert some Star Destroyers in the far off background of the shot where Lukes x-wing leaves the planet, so that it looks like he left planet on a different vector to avoid the Imperials. There's also a rebel transport that is taking off at the same time as Luke, so shouldn't it have been his duty to escort the transport past the Imperial ships to safety? especially if he knew an alternate route? maybe the transport and the remaining X-wings could be added into the shot so that it looks like they all got off the planet together and safely?
someone else mentioned that it might be a good idea to see a few more shots of rebel transports getting past the Imperial star destroyers?, perhaps we could see a rebel transport that wasn't lucky enough to get past them getting blown to oblivian, it would heighten the tension especially if it was slotted in and implied that it was the transport that Leia would've been on if she didn't get out on the Falcon, although that probably negates the suggestion I made in the last paragraph.
whatever you can do to make the 'Our first catch of the day' seem less ham-fisted, the line itself is fine, it's just the badly overdubbed delivery that kills it, know any decent voice actors that could make it sound more convincing?
echo someones previous suggestion to add glowing embers to the Wampa's severed arm and the shot of Han cutting open the taun- taun, at the moment it's only really the saddle straps that flame a little when Han cuts the taun-tauns belly open.
some people have also mentioned removing Luke's 'willhelm scream' as he lets himself fall to his doom after the Vader/father revelation, but that was an audio change that only appeared on the 97 Special Edition and was fixed/removed from the 2004 DVD's.
but as Luke is sucked into the exhaust pipe he enters with his head facing up and feet facing down, in the next shot it looks like they have flipped the image upside down and Luke is sliding along the top the tube with his head facing downwards, I'm guessing they flipped the shot so that they could reuse it agan in the same sequence to extend his slide through the exhaust tubes, but it's a jarring transition seeing him suddenly upside down.