and if anything, the small rewrites or additions have been made available options but not put it officially to replace the original versions
Almost true but not entirely - some small edits have become permanent now. One is the full ending of "No One Is Alone" (originally the last line was not sung, and I still prefer it that way). Another is that the full "Witch's Lament" has been restored. I think there's at least one more little change, but I can't remember at the moment.