Allow Placing of Blocks inbetween Tiles
If you add this it would be nice to be able to be toggled so you can still tell where the tiles are instead of being moved only half tiles at a time. But, this would allow centering between even numbers of blocks. I had a few ideas for centering blocks symmetrically but this is only possible with uneven number of blocks which sometimes looks aesthetically unpleasing.
Should be possible as an advanced Z-axis command if people want it