limit quasi connectivity using transparent blocks in the gap (Java)

When a powered block, redstone block or an observer two block higher than a piston is powered; it can power the piston under certain circumstances. I know this is a core feature but I think there should be a way to stop the piston from being powered.

I think quasi connectivity should be disabled by placing a transparent block such as: glass, a bottom half slab glowstone but not pistons; in the gap between the powered block and the piston. Solid blocks, pistons or no blocks in the gap keep the quasi connectivity.

This will allow redstoners to choose whether a piston can be powered by a block/observer two blocks higher than it, making redstone a bit easier on beginners.