Apollo's Enchantment Rebalance

The mod is an experimental rebalance of Minecraft's enchantment system, aimed at fixing issues its author considers flawed in the core mechanics. Renaming and repairing items cost nothing extra. Applying a standard enchantment to an item adds 3 levels plus the level of the enchantment, so an unenchanted sword with a Sharpness 2 book costs 6 levels, and an Efficiency 2 pickaxe with an Efficiency 2 book costs 3 levels. Hidden repair cost data on items makes repairing and enchanting more expensive the longer an item has been used, and grindstones give more XP when disenchanting items across the board.

The rebalance changes only a handful of enchantments, which are either removed entirely or rebuilt with new names. Curses and treasure enchantments are capped at level 1, while other enchantments are capped at level 3, so a single maximum structure applies. Several enchantments are altered to work with that 3-level structure. Treasure enchantments give a large XP bonus, which makes them worth saving up for. The mod requires Datapatched, Fabric API and Lithostitched, and runs on client and server, so both the server and every player need it. Files cover 1.21.6 – 26.2 for Fabric and NeoForge, and the code is open source under the MIT License.