Suggestion: Block 'Carving'

Suggestion: A 2.5m block should be able to convert to 5x5x5 0.5m blocks, so that one or more can then be 'carved out' of the large block.

Imagine a 2.5m block, and you have a 0.5m block in your hand. You aim at the large block with the small block, and r-click. Currently the large block gets deleted (sandbox mode), but instead the r-click should instantly convert the large block to 125 small blocks (or however many are required to build that particular large block out of smaller blocks), and then the one particular small block you hovered over and r-clicked on is the one that gets deleted, instead of the whole thing. This would be a huge time-saver, for example allowing us to insert a little light or panel into the face of a large block easily without having to delete the whole thing and sculpt the custom block from scratch. It would also allow for easily grebling and detailing on large ships but simply carving small blocks out of the large blocks. Spaced armor could be made by cutting out instead of building up.

If instead you have a large block in your hand and you r-click on a large block, the above mechanic is not used and it remains as currently; the block is deleted.