Heya, I have been running into a lot of trouble in survival when creating ships while trying to duplicate the exact design on the other side. It's very time consuming to go over to one side, identify the exact block used in that place, and then go over to the empty side and copy + inverse its orientation. I was thinking that a Projector placed on the ship would be an excellent way to streamline building in survival without having to go into creative mode to do your more complex blueprints. It would work kinda like this: It would have a button called "Mirror Mode". It would not load any blueprint in mirror mode. The projector would be placed on the grid and mirror its existing blocks in their entirety, in an inversed orientation. You would control the horizontal and vertical offset as per usual blueprint mode, without needing to center the placement of the projector in any particular location to obtain the mirror effect. I think the Projector really needs this feature, because building in survival is very slow. This would at least help it along by simplifying the more cumbersome tasks. So you can spend more time on designing than on memorizing and then repeating a block pattern on the other side of your ship/vehicle.