I was wondering if there was a way to increase the spawn rate of ores and structures using NBTEditor. I've been able to change player data, spawn "illegal" enchanted items, and other fun things, but I haven't been able to find a way to change the way the map generates.
Is it even possible to edit the spawn rates of iron/copper/etc without downloading/creating mods? Only looking to either change chunks that either haven't been generated or on a brand new world.