Don't make Yoda radiactive green. The 2004 DVDs looked awful because Yoda is a bright green, like he is in the CGI prequels. Yoda is not bright green. His skin is comparatively muted, and IMO it looks far more natural. The bright coloring introduces saturation and noise problems, firstly, but more importantly it looks really fake and out of place.
With that out of the way: that was the best trailer I've ever seen for ESB. Good luck with this Adywan! Other than Yoda's skin, it sounds like this could be an even bettter improvement than ANH!
Also: my big problem with the new ESB Emperor was he was all bright and lit-up. The original was fantastic because it was all contrasty and in shadows. I saw a fan-made re-coloring of the 2004 Emperor that simply increased the contrast and darkened the image, and while the makeup still was a bit of a problem, the mysterious nature that made the 1980 Emperor so great was back, and it obscured the makeup so you didn't notice the continuity issues. To me, the biggest problem with the new Emperor is not that it doesn't match, its that he's not scary, he's too brightly lit. Your version looked like it was on the right track though, and the idea of keeping the lip-sync from the new version and mapping it onto ROTJ-era Emperor is a good one.