I too go with both, because you need that sense of childlike wonderment that only playing as a child can bring. A world that is cute, endearing, and friendly, with a touch of fantastic mystery like the worlds of The Wind Waker or childhood OoT. Twilight Princess was all-adult, and the game just felt darker than a Zelda game should. More focus on the terrifying forces of evil overrunning the world, than on the lives of innocent civilians that are being overrun.
However, Twilight Princess's feel of darkness was more appropriate for the grand finale and climax, much as it was in OoT, so such a transition would be fitting.
Honestly, following the model of Fable in this case (and this case alone, many of Fable's better qualities would be ruinous for Zelda) could work best. Make it a coming of age story where we can see Link grow from a wide-eyed little boy into a confident and courageous young man (but not some sort of jaded or bitter campaigner)
Monster Hunter: pissing me off since 2010.
