1. Block breaking arrows sounds OP, so does flatout increased damage for Iron Arrows, glassed or not. No.
2. Harvesting lightning is specialty of copper rods and, for combat, for enchanted tridents. Too much overlap. No!
3. Fire, soul fire and knockback arrows too heavily overlap with bow enchantments, so no.
I propose instead to add Amethyst Arrows as alternative for flint arrows to be made on fletching table - they would lose a good bit of their primary damage, but have better velocity and decreased falloff.
Warped wart sounds like interesting an addition, but I'd rather see it as standard alchemical compound that, if it were to ever give status effects, then through standard potion brewing and arrow tipping.
I don’t think it’s a problem,but in terms of efficiency, using this method to destroy some blocks is not as efficient as using tools to destroy blocks. Anyway, this is only for combat purposes, but in this case the crossbow will have a higher sense of existence, because there are still many players are saying that crossbows are worse than bows. In reality, heavy crossbows can even shoot through police shields, while bows cannot.
Thunder-calling arrow can be regarded as a cheap substitute for channeling trident, because the trident is really difficult to obtain in survival mode, and buried treasure itself is not difficult to find.
The difference between fire and soul fire arrows and flame bow is that fire and soul fire arrows has a longer duration, and soul fire arrows has twice the fire damage.
The knockback distance of knockback arrows is between punch1 and punch2, and it can be used as a cheap substitute for punch enchantment, because warped forest itself is not a rare biome.