I think a string instrument would be great on the gamepad.
I'm adding more to my previous statement. I think an Ocarina would actually be awesome on the gamepad. you could actually finger the holes and use the camera on it to purse your lips or something to blow.
This has been a thing that bugs me the most about Zelda. Most of the NPCs look terrible. Link, Zelda, and a few others look normal, but then there are the ones who are abominable and not at all realistic. Like the potion brewer from SS, the huge-headed bald guy from WW, Groose was pretty close...
I like Ho-oh. It helps that i only have Pokemon Gold, but i think it's cooler. Plus, Lugia is Flying/Psychic type yet it lives in the sea. I always thought it was a Flying/Water type. It is in the card game.
Zelda Wii u is probably one of the most anticipated games Nintendo has ever made. And the Zelda games they were showing off at E3 were both essentially remakes. Personally, if they had shown Zelda U at E3 i would not even think of buying WWHD or ALBW.