I think Journey Into Imagination, the original one, was one of Disney's finest dark ride accomplishments, ever. I realize not everyone was into it, but a whole lot of people were. After it was closed, I was reading anecdotes about parents who had seen it as kids, now being all excited to bring their kids to see it, then feeling darn near crushed when they found out it is gone. For many of us, this ride had real meaning and an emotional wallop (if there was ever an "inner child" celebration, this was it), not to mention phenomenal atmosphere, effects, characters, storytelling...it felt like a work of genius and great sophistication to me, and like the artists put their hearts into it. And it had a feeling of overflowing generosity, a generosity of ideas and images which you don't see so much in the newer attractions.
But I think the ORIGINAL Journey Into Imagination would go over well in one of two places: in Paris, where the charm would be appreciated by the Europeans; or in Japan, where they would spend the necessary money to not only do it right, but make it even better, and put another jewel in their collection.
For personal reasons I'd love to see the old Mr. Toad again in Florida, I know it was campy and crazy but it had real personality and boldness. The one in Disneyland is nice and pretty to look at but it's supposed to be a Wild ride, and it isn't, it's very subdued and controlled compared to Florida's. Florida's was Wild and that was the whole point. It also had a big long line right up until the end.