OP goes in quite a lot of detail as to what changes, but do note it goes a bit into spoiler territory, specially since the stories exist in a continuum.
It does make me curious though, how the changes do pile up, both being 70+ hours-long games with a ton of story.
Welp, guess I’ll have to finish these games a 5th, 6th and 7th time to be sure. Such a tragedy. /s
Also saw no mentions of it, but Mary Skelter 2 has as an unlockable the first game, Mary Skelter Nightmares, so I’m also curious if the changes affect it too.
The prose is worse in the retranslation. The examples given make it sound like more of a deprovement.