The new Wampa scene actually heightens the suspense over the original. In the original, you just get faint glimpses of the Wampa and the fate of Luke’s Tauntaun is left up in the air. People already know what the Wampa looks like so there’s no point in hiding it. And it’s actually more suspenseful to show him feasting on the Tauntaun’s carcass, heightening the tension that the Wampa would eat Luke next.
Disagree respectfully. Not showing IMO heightens the tension more because you never know where the Wampa is or when he will show up. Repeatedly cutting back and forth between Luke and the Wampa makes the situation less dire because the Wampa clearly has a face full of food and only shows us the audience that yes Luke is in a dire situation and needs to get out ASAP but the tension is robbed but revealing too much of the Wampa beforehand.