Crossbow revamp

 In Minecraft, the crossbow is very limited, and for most players is only used to get a select few achievements. The following points would make the crossbow much more likely to be used by a wider range of players.

• Allow for crossbow upgrading: The crossbow to its upgraded form should be like diamond armor to netherite. When a crossbow is upgraded, its arrows do not drop until 50 blocks of linear travel, and its arrow speed is doubled. Upgraded crossbows should also be allowed to be modified to include an iron sight, which is crafted using iron, and allows to precision in shots.
• Allow ender pearls to be shot from crossbows just like fireworks. The firework being shot by the crossbow is already a very cool and unique feature to the game, so it would make sense that more projectiles of its type would enhance the player's experience. Shooting ender pearls from crossbows would allow for faster early-end travel, and exceptionally accurate teleportations.
• Add a new projectile: the bolt. Bolts should be used by crossbows as perfectly accurate, high-damage alternatives to arrows for late-game players. The bolt can also be crafted into a flaming bolt using leather or rabbit hides and a fire charge. Flaming bolts set fire to their target. The bolt should be crafted using iron, to ensure that it isn't used by players who aren't just yet ready.

In general, additions to the crossbow would definitely increase its usage, and make it a generally more fun item, which would be more worth crafting.