The first post needs to be updated to keep a running list of 'needs to be fixed' and releases so people can keep score.
AFAIK:
Little Mermaid: Fixed by me.
Aladdin: Fixed by ADM
Beauty and the Beast: Molly (Could someone PM me, I'm still unclear what's been changed in this movie.)
Song of the South: Released by Mentor and Br'er Preservation Group
Did I miss anything?
I think wasting time fixing OAR/Open matte is silly. Some of these films were meant for wider, some were cropped after the fact, some were re-opened for full height of cells, some re-opened for 16x9.
The fact most of animated features are created as 1.66:1 no matter what was intended during production or finally matted for theatrically. Cells are squarish. Anything else is open to debate.
It would take a lot of time a research to find out the 'original intent' on these and at the end of the day it doesn't matter much.
I know there's been talk about stuff like Little Mermaid's color. While it might be different from a prior release, it is pleasing to the eye, and the changes were made under supervision of the original animators.
I don't think they intend to damage the film when they make these decisions. When you take into account the age of the films, and possible changes introduced by color timing, it's hard to tell what the original intent was at this point. If it looks good, save your time. I'll take slightly skewed color on a good looking DVD over the best laserdisc/VHS preservation any day.
What's more important is deliberate censorship. I think that pisses more people off than anything else and our time is best spent there.
My top list for fixes includes Saludos Amigos, and (as far as I can tell) the undiscussed changes to Fantasia.
I also understand Make Mine Music and Melody Time have been censored... but don't ask me what.
Does anyone know if Three Caballeros has had any changes? I saw someone mention that they thought it might have been censored as well.
Finally... IS the PAL release of Saludos Amigos complete? I see it's active on a notorious bittorrent site. (see edit2 below.)
Edit:
And that's without mentioning the following which are banned outright...
Hell's Bells
Trader Mickey
Mickey In Arabia
Mickey's Man Friday
Education For Death
Reason And Emotion
Commando Duck
Der Fueher's Face
Mickey's Mellerdrammer
Cannibal Capers
Edit2:
My googling turns up that R2 and R4 are censored for Saludos Amigos as well. Anyone know of a clean source for this movie?