I can't speak for everyone, but for me it's simply the lack of proper decoration that means I won't buy it. I don't feel cheated, I just know they can give a better toy and aren't going to do so.
I will say, they should rethink the "art" style packaging images instead of the actual toy... It is deceptive at best, and at worst it's simply false advertising that you'll get "this great new toy!" when you really are rebuying something.
A new sculpt would've been interesting. S cale of Vader's TIE Is debateable though so I wasn't ever really unhappy with it, but I see where people are coming from with that completely. They should picture the toy, not what they chop together, especially when the color isn't even the same.