With Minecraft 1.21 scheduled to be released on June 13, I thought I'd share my ideas on how the new items could be made renewable:
Trial spawners, vaults, and ominous vaults generate in their normal locations, much like some other structures already do. This makes breeze rods, trial keys, and ominous trial keys renewable, and removes the need for the “Glow Berries Craftable” and “Spider Jockeys Drop Cobwebs” datapack features (I would suggest keeping them but disabling them by default).
Feeding a diamond block into a vault or ominous vault using a hopper resets its list of players that have looted it. This makes flow and guster banner patterns, flow and bolt armor trims, Creator and Precipice music discs, and heavy cores renewable, all without making it possible to farm diamonds using vaults. It also removes the need for the “Cats Gift Enchanted Golden Apples” datapack feature.
A creeper killed by a skeleton inside a trial chamber can drop the Creator (Music Box) music disc.
Guster and scrape pottery sherds are added to the loot tables for regular vaults, and flow pottery sherds to ominous vaults.
With Minecraft 1.21 scheduled to be released on June 13, I thought I'd share my ideas on how the new items could be made renewable: