Data shared between users of the same effect

For example, I would like it to be possible to create an effect where I could assemble an object made of blocks, like Minecraft, and other people who were going to use the same effect could load my saved object into their effect. It could have a node to save an array or string, and a node to load an index list of saved data and be able to load the data through the index.
This would add a lot of value to the effects, as people could create content cooperatively.