YUNG's Better Mineshafts by YUNGNICKYOUNG
A lightweight mod to prevent strongholds from being torn up by underground caves and structures.
YUNoMakeGoodMap by LexManos
Adds a new World Type option to generate nothing except for a inital spawn platform, useful for creative players who want to make Skyblock style maps. 2.0 reduces the spawn zone to 1 block, 2.1 is updated to 1.5.2 and srg names, *should* never need a update again ;)