A block that is completely invisible, and you can walk through it, and basically acts like air with a hitbox. You can then make microblocks of this and you have an invisible bluestone wire blocker, and looks as if nothing is there. Possibly you can see it when holding a screwdriver or something.

like

I dont see the point...

The point is to have wire separators that appear to have nothing there.

get a bucket click in air get air in bucket and then craft it wtih 4 air buckets and get air block

How would one get said air block?

Would make much more sense with 9 bottles then 4 buckets.

Probably going to cause more issues than that it's worth. People might not be able to see this air block and start to wonder why wires don't connect.

Even more so: "Why can't i place a block here" might be mentioned a lot.