So, I rather enjoy the addon Thaumcraft, and with the new ore generation config options, I thought I'd check it out to see how much would need to be done for full compatibility. I just tried out of the box, without touching the configs, and was pleasantly surprised to find that it didn't crash. There were a few problems though. The first thing I noticed was that animals were EVERYWHERE. They were TFC animal, but the place was crawling with sheep and chicken and bears and wolves. Occasionally I came across perfectly square sections where the terrain dropped to sea level, presumably where Thaumcraft biomes would have been. I searched for a while but was unable to find any thaumcraft biomes or trees. Or really any plants or mobs. But the nodes did spawn in normally, which had been my biggest concern. My test was done with custom NPCs installed, which could be used to work out recipe equivalencies (like pop a tuyere into a crafting table to get wand caps. Or whatever). Happily, all TFC stuff seems to be working normally. Besides the animal spawn rate. Obviously some work would need to be done to get a seamless experience. So, for a crossover mod, we'd need: Easy Stuff: Add the thaumcraft biomes, plants, mobs Reduce the animal spawns back to normal. Somewhat harder: Add aspects to TFC materials add exchange recipes for Thaumcraft items (easily done through custom NPCs, but an integrated solution would be better) Lots of work Change entire items and associated textures (thaumium wand caps become Blue Steel wand caps) or Add smithing recipes for wand caps, smelting recipes for thaumium, etc. Change item ablilties to better fit in with TFC progression Stabilize the Nether and add a way to get there Now... I'm not really a programmer, so I won't be able to do this, at least not soon. But seeing how little is now needed to get this working, I thought I might inspire someone who knows what they're doing to work on this. If needed, I'd be happy to supply some textures, and I'd definitely add thaumcraft to my todo list for my resource pack.