The Mobile Suit Gundam Trilogy of films from the early 80s were “remastered” in 2000 or so. This involved having most of the original actors come in and redub their lines, and adding new, out of place sounds that belong in a PS2 game. Sadly all of the BD releases of these films only include the redubs. The only way Americans are able to experience the original sound design is if you have copies of the VHS with the infamously bad dub.
Another Gundam project with butchered audio is the OVA series Stardust Memory. In 2006, it, like the Trilogy before it, was remastered to 5.1 audio by redubbing all of the dialogue and sound effects. American releases only include the 5.1 mix, while the dub has sound effect alterations of its own, so that should be avoided as well.