I'd like to see a new version with super articulation and some softgoods. Ball-jointed hips would be a must so that this figure could sit properly on a new tauntaun.
I just thought about this - yeah a softgoods scarf/hat thingy would be great, so if you hang him from the wampa ice cave, it can naturally fall instead of having the peg in hole twist down feature. Also, and I may get flak for this, but I think they could put in a swappable hand for him. It will still be a gloved hand, reaching (like he does for the saber in the cave), and swappable below the wrist/glove (so that it could still have SA style articulation built into the actual wrist), but it could have that old AOTC magnet feature built in, and he could come with a metal saber hilt. If anyone deserved to have that "force pull saber" feature, it's Hoth Luke - the first person we ever get to see use that trick. Plus if they make it an alternate hand, it won't make everyone mad, since they can still have a normal hand on him at all other times.