Everything is very smooth, playable and fast. I believe there's a lot of depth and I could spend a lot of time learning and building cool stuff.
At the moment I just feel like there isn't much purpose in doing so, as there's no conflict, no waves of enemies coming to attack me at night like in Factorio or Terraria. So what's the point of building all this cool stuff?
I see there's monsters in the steam trailer, and monster farming is mentioned in the description so obviously there's going to be something with that in the full game. I also see there's room for a puzzle game from doing the sequential challenges in the tutorial.
A sandbox alone isn't enough for me (though I'm sure many people want that. Maybe I'm greedy wanting the game to be made exactly how I want it.), I want a real game I can win and lose.