The following comes from a Nintendo Dream interview with director Hiromasa Shikata, designer Keisuke Umeda, and producer Eiji Aonuma...
- determining the effect of a costume came first, then the actual visual design was created
- for the cheer costume, the first consideration was actually for an idol costume
- this costume would increase the Energy Gauge,
- the idea was changed to the cheer costume to make things more easily understandable worldwide
- the Timeless Tunic was developed with the idea of “let’s create a costume that changes the music”
- NES-style music was created due to the size restraints for download play, as including the original BGM would be too big
A portion of a Game Informer interview with Eiji Aonuma...
GI: Princess Styla speaks at length in an online trailer, which is odd for a Zelda princess. Were you involved in the decision or selection of giving her a voice?
Aonuma: No touch [laughs]. Nintendo Japan had nothing to do with the American marketing plan. We had no influence or involvement on that trailer at all. I do remember having a discussion though, about the Japanese trailer, which has the King Tuft speaking. I asked, “Why can’t the king speak in the American trailer?” and the people we were speaking with said, “No, no. We really think the princess is best for this,” so I said, “Well, if you insist, go ahead.”