First, a lighting issue. Right now, underground places are lit as if the massive chunks of dirt and stone beside and above them are just a wall or a building or a tree. In other words, they’re not very dark. In my opinion, they should be significantly darker, maybe even almost black once you go far enough from the entrance. In order for this to work well, lanterns/braziers would have to light up when they were underground, not just at night.
Second, a continuity issue. Mining can only be done in 4 [and/or 5] block increments, but walls are 6 blocks tall. I’m sure the mining and landscape bar will later be filled with commands for the geomancer and stuff with water, but as of now it’s fairly empty. I bet a 2 block or single block mining tool could be squeezed in there somewhere.
Well, that’s all I have to say about that. I don’t know if these suggestions would be worth the time it would take to program them, but I feel they would make the game just a bit more polished.