@McJty Since you're looking at shields, here's a feature request: "Remote shield block" -- a block which is a part of a shield block set, but is linked (with the wrench?) to another shield block range-limited. Cost relative to distance to other block. Permits disjoint shields.

That's already possible Even in 1.12

Oh? I'm entirely useless then -- how?

Use a smart wrench: 1) put it in select mode (right click in air) 2) Sneak right click on the shield projector 3) Right click on disjoint shield templates that you want to add to the shield