Is it ok to use the Schematica mod? It's a client side mod and it works on servers. Its provide ghost schematics and a build bot and som other features. Schematica - Minecraft Mods - Mapping and Modding - Minecraft Forum - Minecraft Forum
Whoo why didn't I know this? This would have saved me a lot of time. Does anyone know whether this works with microblocks and carpenters stuff? Also, we might want to think about simply adding it to the launcher as optional mod, right?
Make sure to read the configs in-depth. They offer some interesting exploity stuff if it is added onto the server.
I was talking about using it as a client-only mod, not to install it on the server. If there are any exploits working if you have this installed on the client-side only, please post them in the private bug reports section so we can try to fix them.