More texture options. Scale, rotate and move textures!! Please! This would make combining different blocks blend a lot better.
Changing the location of where the gizmo is on the model, Snapping the location based on the magnet’s locations would be good enough in my opinion. This would also help if that selected gizmo-magnet location is the one to snap to the closest magnets. Because snapping magnets is a real pain.
Stair blocks, spiral stairs, curved stairs
More curved blocks that have different strengths of curves, since scaling a curved wall is very hit or miss.
Smooth arches that have corner pieces to fit with walls. We have the forerunner door frame (not a smooth curved arch), but just an arch that fits right next to a wall would be great. Creating a piece for the corners of an arche frame is very annoying,