Hey Andrea! I definitely love this project. It may be useless but I can provide the original French stereo mix if you're interested. I've ordered a VHS which should be here really soon. You should also do that with the Italian audio it could be a good idea.

I would like to provide the LD analog and AC3 audio tracks from the Laserdisc but unfortunately, this particular LD is really hard to find and very expensive.

About those ugly artefacts issues, you can try to upscale the DVD and use it to replace the scenes with artefacts. Well, I'm pretty sure you already thought about that. I haven't read all the posts on both topics.