Villasger and Wandering Trader trade reroll

One of the most annoying parts of trading is getting a trade you don't want. This especially is annoying with wandering traders, who are often your only pratcical source for certain items, and trades that require a high level villager, as you would have to waste more emeralds to get the disired trade. I would suggest a feature that allows you to reroll a specific trade for the price of 1 emerald, for instace allowing you to reroll the terracotta trade for mason villagers.