We know a ton about the general direction. Instead of having a flat world to explore you'll have a largely vertical expanse of sky, ground, and caves to explore.
Why should we? What do they offer that’s different from the main overworld? How extensive are they? What greater purpose to they serve? We don’t need answers to every single question, but at the moment we know absolutely nothing about them besides the fact that they exist.
Link has a new magic arm which can do a bunch of brand new systems driven functions.
Such as? We’ve seen a couple of quick snippets, but we have yet to fully understand the scope of it. What sort of utility does it have? Are there any drawbacks?
Ganondorf has been resurrected
I don’t really care about the story here at all, but even for people who do, we have no guarantee if that even is Ganondorf. Why is he back? What’s his goal? What is he doing to stop us?
What more exactly do we need to know about the direction? You'll need to collect/explore X things/places to be able to fight/defeat Ganondorf. That much is obvious.
I’d like to know exactly what we’re collecting, which is a pretty important thing, because that defines the structure of the game. Is it closer to traditional Zelda, with larger dungeons, or are the main collectibles spread out more evenly like in Breath of the Wild?
We know plenty more about the gameplay since BOTW itself informs a lot about how this will play. We know about combat, perfect dodge, flurry rush, bows, bombs, etc. They're marketing this game specifically with the understanding that the audience knows all that stuff.
Which is fine, but we know so little about the new elements that these elements become more noticeable, and as a result the comparisons to Breath of the Wild become even more obvious.
Again, I don’t want every single question answered. But I’d like at least some of them, along with some actual in-game footage to give an idea of just what we’re actually doing in Tears of the Kingdom. And yeah, at the end of the day I do have faith that they’ll deliver something crazy and unique, but that faith is very blind right now, and I certainly understand why anyone wouldn’t have it. Because at the moment, the footage we have really is just “Breath of the Wild with some cool new stuff”.
I guess the best way of wording it is that I’m very hyped for the sequel to Breath of the Wild. I’m not particularly hyped for Tears of the Kingdom. I have yet to see anything that makes me excited for this game in particular; it’s all rooted in my love for Breath of the Wild.