I'll see what I can do. I seriosly don't want to replace Luke's sabre in that scene, as it would be an incredible amount of work but I'll think about it. As to Vader's cockpit, I'll certainly try.
And it would be awesome to have an improved version of the 70mm mix. Maybe you could use the LFE chanel from the BD and thus have all the sources be lossless? But I don't know how bad the BD mix is.