Hello. I have an idea (3 before, but they kind of 'sucked') for the Shield element in the famous and amazing, The Powder Toy. 1st idea:
* Shield to block any kind of velocity and pressure To make Shield (SHL1, SHL2, SHL3 or whatever (sorry )) block air pressure, so it would be like a force field. This would serve the true purpose of the Shield as a energy force field.
That's it. Hope you like that idea. As I have no idea about Element Programming in The Powder Toy, it might not be possible to make an element completely pressure blocking.
If you make any element thick enough in quantity it effectively blocks off pressure about 90%. Shield element is designed more to take the blunt effect of nukes, to protect wires on machines that blast stuff from being burned by their own explosions. ^^
It would probably be possible to make an element emulate the pressure blocking effect of walls but I dunno that much myself.