I use the Minecolonies mod and often find that it is a huge pain to find a spot to place down a new town. Everything is always too far from something or the amount of work to flatten a large enough area for a town is insane. I would love a mod that flattens the first 200 blocks around map center then spawns every type of biome in a 1500 block radius. (not every single biome type but just enough so that you don't have to go 5000 blocks away to find a certain resource.) I am sure this mod would also get a lot of general use for people that want building space but don't want to just use a flat world and don't want to run all over the place for resources.