I will die on the hill of "The Emperor's New Groove" is Disney's Most Underrated Animated Movie". It goes outside their usual comfort zone- only one real song, a far more angular character design than usual, and has a silly, madcap almost classic Merry Melodies sense of humor- even though the plot itself is a fairly routine buddy comedy. I really don't understand how positive word of mouth to push this movie into better financial performance.
So, I don't want Disney to stick to singing princesses either. But on the other hand, given their spotty track record, I don't want them to jump back into sci fi again for awhile, until they've really worked out a good story with better characters.