As many have said Beauty and the Beast and Lion King have been criminally overlooked. I'm just not sure they're dark ride material. They certainly deserve something permanent, but I'm not sure that's it. Although it would NEVER happen, I'd love to see a Beauty and the Beast castle. Or at least some kind of walk through experience. I don't know any child that wouldn't want to explore that place. As for Lion King I don't know what to make that into. It would be hard to top the Lion King Parade that ran when the film was released.
As for Aladdin, that's dark ride material for sure. Something in between Peter Pan, and Indy. As for Cinderella, that deserves something, but I'm not sure what. Sleeping Beauty however already has the castle, so I don't think we need to prioritize that over anything for the time being.