Progress so far:
Fix (revert) two corrupted chunks in Bongatar and Desertopia.
Replace all snow layers with air and all ice with water.
Drawing most of Kaktoland's, Epicland's, Novascotchara's and Yukiland's biomes.
Smoothing chunky borders at Jungelot, Ampluterra, Kaktoquake Cliff, Earthquake Forest, Epicland, Yukiland, Zuntriio, Revolutea, Awesomeland, Rossjungles, Novascotchara, The Battleground, Rift Auspikitan, Hondarah.
Still to be done:
Paint all the other biomes (essential)
Fix other chunky borders (optional)
People can tell me which chunky borders they think are most important to get fixed and which one I can leave for later, depending on when you want Blacraft back. If I fix all of them I can imagine it taking weeks. My current idea is to spend tomorrow on fixing chunky borders and the day afterwards on drawing biomes, and then put the world back online.
Current progress is visibla here:
http://dl.dropbox.com/u/31772508/Blacraft%20s18.png