Crossbow Enchants
I believe Crossbows need a broader set of enchantments. They only have 3 exclusive enchants, even the Trident has more enchants than that...
Velocity (I-V)
This enchant retains the crossbow projectile's velocity (and damage output) by 10% per level. It is the crossbow alternative for Power.
Spalling (I-IV) [Cannot be paired with Piercing]
This enchant bypasses raw armor protection by 20% per level. This enchant would make crossbows super useful in late-game combat, since it would likely deal meaningful damage to Netherite juggernauts (unless they have Projectile Protection). It is even more effective with fireworks as the projectile. It is the crossbow alternative for Breach.
Bang (I-III) [Cannot be paired with Multishot, Velocity, and Piercing]
This enchant is a little interesting.. Upon firing an arrow, the recoil is strong enough to push you back a few blocks, essentially making it a mobility tool. At level 1, the recoil would push you 2 blocks into the air, each level increases that value by 2 blocks, meaning you could fly a total of 6 blocks per shot. It might put wind charges out of business so similarly to lunge, it should take a large chunk of durability from the crossbow.
No more dying to the void with a Bang Crossbow.