pquality adds a system of Item Quality similar to Factorio: Space Age or Stardew Valley.

Effects of Quality

• Items have more durability
• Food replenishes more hunger and Mob Effects given last longer
• Weapons deal more damage
• Tools have faster mining speed
• Armor gives more protection
• Villagers give you more Items and gain more XP
• Anvil repair materials repair more durability
• Firework Rockets propel Elytra further
• Fuels burn for longer
• Bundles have more space

Obtaining Quality Items

• The Enhancement Enchantment adds a chance for Quality drops when Blocks are mined, mobs are killed and fish are fished, depending on the Player's experience level
• Crafting, Brewing, Smelting or Smithing enough Quality Items together produces a Quality product
• Example command to add Quality to held item: \contaminate @s pquality:bronze_quality

Compatibility

• Create:
  • Quality machines have a lower stress impact
  • Quality is preserved through most Create recipe types

All of these features can be configured (through datapacks or Forge Configs), so you can disable any you want individually. You can also set a config to only show the Quality icons if you are holding shift.

If you think this does not seem like a large set of features, that is because pquality is more aimed at modpack creators who can hook into the Quality system. The default Quality levels are Bronze (+10% to most stats), Silver (+25%), Gold (+50%), Diamond (+75%) and Netherite (+100%), but you can define any Quality levels you want with a datapack.