The simplest answers make the most sense to the new trailer mysteries

1) the long hair and toga are in game outfits, maybe an “ancient hero” outfit

2) you can’t see the skylands from below bc of the same barrier the dragons pass through/the same barrier from ss

3) ganoncorpse is raising the castle bc he wants to get to something in the sky

3)a) the thing in the sky is a/the triforce, bc that’s usually what he’s after

I think there are a lot of things that make more sense than time travel, but that’s just my guess.