I'm really wanting to change a region of my floating islands world to be taiga so it can snow naturally (wanting to make a christmas tree floating island). But the only biome-related commands in BTA are for finding biomes, and there doesn't seem to be any BTA equivalent of MCEdit or WorldEdit.
Is there ANY way I can change the biome? Doesn't matter if it requires installing mods, going through a complex process or dealing with janky file editing, I can go through the time to get it working.