Special Trades from Hero of the Village

Important Note/EDIT: This is only for villagers that are already Expert or Master level to keep things balanced.

Obtaining the effect of Hero of the Village should unlock one special trade from each profession of a villager. For example, a mason could have emeralds for obsidian. A cartographer could give a stronghold explorer map (new item from special trade?) or a map to a rare biome (such as badlands). A fisherman could give a heart of the sea or nautilus shell. For some villagers, the enchantments on a certain item should be higher. For example, armorers, toolsmiths, and weaponsmiths might give better enchanted gear (still as a unique trade), along with fletchers giving a better bow or crossbow (randomized) as one trade, and a random tipped arrow as another trade.