I fully agree with you. I'm sure it sounds idiotically nostalgic, but for me the original OT trumps all other Star Wars-based media. Before all the books, video games, PT, TFA, etc., the most amazing thing about the OT for me was it was a catalyst for the imagination. Vader, Boba Fett, Obi-Wan, Yoda were all so much cooler and more interesting before we knew anything about their back-story. On top of that, it was so much fun imagining what adventures could happen to Luke, Leia, and Han after the end of Return of the Jedi.
I'm keeping my pre-order. There is definitely an issue with the sculpting under the fur, but the latest pics look much better to me than the SDCC ones. Also, as others have pointed out, the distance between my collection shelves and my face when I'm sitting in my man-cave is several feet, so I think both Han and Chewie will look pretty good from my typical vantage point.
The futzing aspect of Chewie was always going to be a big part of it. He's covered in hair/fur. Even if the sculpt underneath was perfect, he'd still require a good amount of futzing right out of the box...