Yeah, the blu-ray is clearly superior. I just wish they had left the natural grain, and thus detail, fully intact (iirc, that's one thing they did right on the Episode 1 DVD, tried to retain the natural film appearance), but there's still much better detail on the blu-ray.

As far as the color problem goes, that can be corrected in scenes where it affects the picture the most, bringing the colors back closer to the natural warmth that should be there. And if every scene has had that same color filter applied to it on the blu-ray, then it's even easier, because it should be simple to counter-act with a color correction value applied to the entire movie.

If one wanted to use the blu-ray as a a basis for a restoration of the theatrical version, or at least get closer to it, since we don't have a 35mm print to scan, then one could use the hdtv capture in certain scenes, to restore the real Yoda and so on.

I'm not sure if adding grain helps that much, though. Since some of the natural grain and detail have already unfortunately been removed on the blu-ray set, adding artificial grain over it might just obscure some of the nice detail that has been retained.