Blueprints (8 different blocks to make a cube to scan your builds and copy)

I have always wished that I could build things and make a blueprint to place somewhere else. How it would work is placing 8 easy-to-make blocks to make a cube like shape (can only be straight to connect on not diagonal). It will scan anything inside and make a blueprint. It will be a separate item. Once I put it down, it will build by itself once you have cleared the area and have enough resources (survival only). If this is done in creative you don’t need resources whatsoever. This will make building so much easier.