SilverWook said:

A fan droid builder group that didn't get it right would never live down the shame of screwing it up.

Anthony Daniels has said he asked for, and got a Threepio suit that's easier for him to wear, and outwardly is identical to the original costumes. We've already seen a pic of Chewie that avoided the mistakes made with the Episode III suit, so why worry? :)

What was wrong with the Ep. III suit? I don't remember any issues, but it's been so long since I've seen it...