Terraria 1.4 UPDATE wish list looks at my personal ideas for new bosses, events, biomes & items for the Terraria 1.4 update! In this 1.4 update list I talk about possible new NPC upgrades, ideas for a new mechanic class, possibly new bosses and biomes they could work in as well as an idea for post-Moon Lord areas to explore! Have you got some awesome new boss, event, biome & item ideas for the Terraria 1.