My friends and I have been playing World of Cubes and we want to build a public world together. The only downside with this is that if a world isn't read only, other players are able to destroy the world. A feature should be added where the creator of the world could be able to select who in the world is able to build. This way friends are able to create fun public worlds so that other people can join and everybody can converse. It could be kinda like an admin system.