This was requested by one of the players on my server. If this already exists, (I've been searching), please link! You place a gold or iron block, which protects for example a 25x25x25 area. Maybe built in with World Guard, or simply just a plugin which knows who placed the block, and protects it, so if someone else tries to edit 25x25x25 blocks from the iron/gold block, they get an error message. Maybe max 1-2 blocks per user? Iron blocks protects a little less than gold for example.