Hey! I know you posted this a few years ago, but I have something similar to what you’re looking for! It’s not exactly what you wanted, but it’s still an enhanced sound mix! The video quality isn’t quite blu ray quality since at the time I could only use up-scaled DVD footage, but it’s not the worst thing ever. I plan of revising it some time soon, so I’ll layer the blu ray footage on top of it.

Check out my post: https://originaltrilogy.com/topic/Nausicaa-of-The-Valley-of-The-Wind-with-Redesigned-Sound-Mix/id/80202