"I think you should just give up on this" and "I don't think it's going to look any better than the one already there" have to be the worst ways to get an update that I can think of. You need to seriously reconsider your approach to suggestions on this board. If Adywan says he's going to do x, y, or z, it's because he has every confidence that he can execute it as well as, or better than, ILM did in 1980. Maybe you're young, so I'll give you that you have a lot to learn about tact. Compare:
"Adywan, I think you should just give up on this Wampa. It's taking too long and you don't even know if this is going to work? I thought the one in the movie sufficed. I think you should have just edited using that."
vs
"Adywan, I think the Wampa is the boldest change you're making to this edit, and I'm really curious how you plan to execute it. Do you have any experience with puppetry or animatronics? If you got to the end and it didn't look right, would you scrap it after all the work you put into it?"
This has been a brief lesson in tact by the Official Wampa Comber of the Revisited Project.