Ok this may be a big one, but i think its a good idea. Well i had an idea wen i played another game called Space-Engineers and they have a feature that allows mirrored building, ex you say a cmd while looking at a block "ex /MirrorMode Add" then whatever side of the block your near it will mirror what ever block you place, it will place stairs in reverse as if its a real mirror, and you can add more "mirrors" my "/MirrorMode add" and it will add another one, and "/mirrormode remove all" to remove all mirrors Well i hope you fined this interesting and i really hope someday this will be in WorldEdit!