Allows blueprints to be used much earlier. Once a blueprint is placed, nearby entities will be auto-placed at 5/second so long as you have the objects in inventory and are standing still. Once items are marked for deconstruction, they will be auto-removed and put into inventory so long as you are standing still. Press b to toggle building, press n to toggle demolishing.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
Bluebuild adds useful blueprints to the early game. Immediately from the start you can place a blueprint and items will be placed at 5 per second so long as you have the materials. Demolishing works the same way. Plan your grand scheme from the start with Bluebuild!
If you have trouble with performance, especially in multiplayer, try turning auto-build and auto-demo off (shift+b and shift+n by default) when not in use and encourage other players to do the same.