Some ideas / Tridents

There are some ideas I had to the Trident (probably my favorite weapon)

• See, I love to use the Trident, specially Riptide, but when I try to attack with it I'm always hurt, because the enemy can attack me before I attack him, so the simple solution is made the player invulnerable to projectile or melee attacks when travel with Riptide
• Another idea to Riptide is, when the player attack someone holding a shield, the Trident can be nailed to the shield or/and disable it
• The Trident remember me to a spear, that is usually used to fishing, so why don't make, when we kill a mob using a Loyalty Trident, the Trident can bring us the loot?
• Finally, I think the enchant Impaling can be the Tridents Power/Sharpness, dealing additional damage not underwater, but still dealing more damage if the enemy is wet (by water or rain)

Thanks for reading! :D