Falling Block That Does Not Conduct Redstone

In the game, there are many falling blocks, but almost all of them conduct redstone. Gravel, Sand, Red Sand, Concrete Powder - all of them conduct redstone. Among falling blocks, only the anvil does not conduct redstone, but… it cannot be moved upward using pistons.

I propose a simple but very functional idea that could fit into any game update: a falling block that, like glass, does not conduct or receive redstone.

Why?

• Imagine vertical logic gates where a single piston block below can change the logic of the upper circuits.
• Imagine punch cards on pistons, where these sand-like blocks rotate in a loop as a program.
• Imagine a musical synthesizer that works on these punch-cards, or rather sand-cards, spinning the same sand record in a loop, using a simple matrix of conductive and non conductive sand.

This is a grand addition to the game that has the simplest possible implementation but fundamentally changes redstone circuits forever, opening a whole new world of possibilities: huge matrices, 3D memory, all in a very compact and pleasant form.

Implementation cost: a few lines of code.
Impact: crucial!