I am a MASSIVE fan of mushroom biomes, because of three things:
1.No mob spawns, Am poopoo at the game so massive hordes are terrible.
2.Because they are generally secluded islands, that mean oceans, which means big empty space with no mobs, and the massive chunk of land where not mobs can spawn in the mushroom biome means that mob farms are ultraproductive, and require almost no work.
3. There's a challenge i like about growing trees from scratch, and making everything you took for granted a farm, so that you can simply survive on barebones equipment, like having to make a steak or gold farm for food. (gold farm for Gcarrots, tho it does need carrots.)
So, hit me with some mushrooms island seeds, The bigger the island, the better.