sounds like a good idea but im sure a working cobblestone generator in a MCSG map would cause a bit of lagIt would be awesome to have an island which would only be accesible by finding a secret button that would activate a cobblestone generator that builds a bridge to the island and that island sohuld probably have good chests for all the waiting of the bridge to get built by itself
I will recoginze though that this idea is a little bit weird for a survival games map so i know you probably wouldnt add it