I'm trying to think what movie got mauled the worst, though anything I'd want to preserve I can probably acquire - or mostly thanks to drfsupercenter, have - on laserdisc, which is certainly better than nothing...

The ones I think really got the worst of the hatchet are in this order, Beauty and the Beast, The Lion King, and Aladdin - and Aladdin mostly in the audio, the video not really getting hit. But if I had to say just one movie that absolutely needed a resto? Prolly BatB.

I would've included Saludos Amigos but they got sane and included it as a bonus feature on Walt and El Grupo, so that one has no worse than bumper plastering, which I can live with.