so i was digging through some random shit, and then came across this site: http://www.minedraft.net/ its name literally means its business. it lets builders plan their constructions before putting it into a real Minecraft world. well, i'm not sure if it's any more efficient than flying around in your Minecraft world, because it's in a 2-D plane. but i feel like this could save efforts for the build team. just sayin'.