This will be a new category in the "World" Section on the Mission Editor add-on. It can be called "Brick Editor", we will be able to move and rotate bricks by mouse and keyboard like how we move shapes on Blender (except bricks will not be able to phase through each other).
This is essential for two things, one is that it will make terrain creating much easier since you can move faster with the camera and adjust precisely where you want bricks, the second is that it will develop a new way of building and possibly attract more builders to build games if they are used to using programs like Blender which will be similar to the "Brick Editor" option.
New features can be added from this like copying and pasting, Ctrl c to copy and Ctrl v to paste, painting (without having to teleport your character again and getting out the paint tool)