Monthly MINIBOSSES

Structure loot is the most immersive way of obtaining items in the game, but it has a critical flaw. Since only the first explorer can reap the reward, large scale servers simply cannot provide everyone the feeling of adventure to everyone except the early birds. Therefore, there should be a way to regenerate structure loot, and monthly bosses are the best way to accomplish it. 

Each full moon, a unique boss for each structure would generate in any part of the bounding box or a separate secondary box if the structure is completely filled up. Killing the boss would drop a bundle with the loot that are specifically found in the structure, spawn structure specific and unrespawnable mobs, or convert some of the surrounding sand and gravel blocks into their suspicious forms.

For example, when a full moon appears in the overworld, an earie chime would ring across the nether, spawning the Piglin Warlock in every loded and explored bastion. The warlock would cast fire and wither magic from the back while 2 piglin brutes are guarding it. When the warlock is killed, the loot bundle may contain gold, gilded blackstone, netherite upgrade smithing templates, snout armor trims or banner patterns, lodestones, and netherite scraps.