Feature description

Some additional tags to allow additional mapping of modded enchantments to Tetra items, such as:
breaks_stone or pickaxe_block_breaker (for pickaxe-specific enchantments like Apotheosis' Boon of Earth enchant)
log_breaker or axe_block_breaker (for axe-specific enchantments like Treecapitator/Chainsaw, added by many mods that add enchants)
can_till (for blocks that have the ability to till farmland, for hoe enchantments like Cyclic's Growth and Apotheosis' Temptation and Nature's Blessing
and last, but most important: shield (for the many mods that expand on shield enchanting).

How it improves the player experience

While it may not directly or immediately improve player experience, it allows modmakers and modpack makers to more easily integrate Tetra's tool system into an expanded enchantment set. Personally, the ability to enchant Tetra tools with non-vanilla enchantments helped draw me to the mod initially, and the ability to add more enchantment compatibility would be fantastic.

Tetra synergies

More mod interactions! More intermod synergy! More fun!

(no idea what to say here that I haven't already said)