Well, the old Wampa looks different from the old wampa in a few shots too. The first one is the sock puppet built by Jon Berg and Phil Tippet. It was the one we see at the first. The second one if the one they filmed on set at Elstree. That had horns on the side of its head.
So, there is a bit of fudging in the original too.
My suggestions for the wampa scene is to keep at least one of the SE shots of the wampa munching on the bone, but darken the scene considerably with one exception-those eyes.
I'd actually try to disguise the wampa as much as possible until the end when it shows him howling after Luke cuts his arm off.
edit
Here's a small list of changes I'd like to see:
1. Some of the wampa stuff I noted above.
2. If possible, a larger walker attack. Can you do comps Editous?
3. Recomp that shot where the rebel transports are in the background and Joe Johnston talks about the shield to a rebel officer.
4. Restore the "bring my shuttle" line of Vader
5. Take out following SE shot of shuttle on landing pad.
6. Yake out the SE podcar flying through cloud city just prior to showing Leia inside her quarters.
7. Take out Vader landing aboard death st....uhh, star destroyer at the end.
8. Take out shot of Vader's shuttle leaving bespin
9. Take out the elevator moving up in the window shot at could city as Lando takes Han/Leia to dinner, but leave other part of matte vista.
10.put back in "lucky you don't taste very good." Luke to R2.