Having gotten to sit down and look at it properly, wow! It’s dramatically better than the source material. The amount of noise removed is stellar, and entirely appropriate for this sort of movie. The animation is very clean and you can see the pencil lines as such rather than aliasing artifacts. I’d totally believe that this was an official HD release that used the same old master.
There’s still film specks and dirt and things like that, and I don’t know if an automated removal of such things would work well or not.
This is a wonderful release, and something I’ll be glad to have stored on my hard drive, as a big piece of my childhood. When I look over the movie with the question of its original aspect ratio in mind and aware that it had a widescreen form, I can’t help but wonder if it was done with an open matte. That’d be relieving to know.
Big thanks, Octorox.