instead of creating a new void world for each vip i think it would save a lot of hassle if u just made one and then whenever someone wanted a void world you would fly off and make a linking book then you would put said linking book in a link modifier and add the generate platform addition this would reate a platform in the void when it was used so the user had something to build off
this would mean you would only need to make one void world which would reduce the server lag caused by mystcraft