A couple of smaller things
When restarting, you have to wait for the UI to finish popping up before being allowed to roll. Minor thing but I'd love to move at once.
In the crystal rooms, as well as the shops, one has to roll close to items to see what they do. This is a bit irritating to me because a) I'm bad at making decisions and reading while simultaneously controlling the seed and b) it takes time to roll left and right and I want to get back into the flow of the game ASAP. The crystal rooms are already a flowbreaker for me so I'd love to minimize the time I spend there.
To me, the shop seeds seemed a bit expensive - why pay lots of crystals for them when I can just find them in the real world? I might be missing something but I often just skip it to save time.
Also OH MAN THERE WAS THIS WORM and I actually murdered it using a mine seed. It felt AMAZING
Having lots of fun so far! :)