11clock
Terrarian
You currently obtain biome keys as very rare drops from enemies in their respective biomes. This can make it annoying to get your hands on the loot in the biome chests in the dungeon. I propose a more streamlined way of getting the biome keys.
All of the biome keys are located in the Temple. Each key is in a chest in a room decorated after the biome that the key represents. For example, the frozen key is in a room with snow and ice scattered around, representing the Tundra. This is very similar to Treacherous Mansion in Luigi's Mansion 2. This change would make the keys much easier to obtain without relying on RNG or AFK farms, fit into the game's natural progression (you unlock both the Temple and Hardmode Dungeon after beating Plantera), and also make the Temple feel like a callback to all of the biomes you have visited over the course of the game.
All of the biome keys are located in the Temple. Each key is in a chest in a room decorated after the biome that the key represents. For example, the frozen key is in a room with snow and ice scattered around, representing the Tundra. This is very similar to Treacherous Mansion in Luigi's Mansion 2. This change would make the keys much easier to obtain without relying on RNG or AFK farms, fit into the game's natural progression (you unlock both the Temple and Hardmode Dungeon after beating Plantera), and also make the Temple feel like a callback to all of the biomes you have visited over the course of the game.