Duplicate Armor Trims With New Villager Trades

This could be added to the villager at the smithing table job. There is already a toolsmith villager job there, so maybe something akin to an anvil that doesn't have gravity and doesn't break after use could be the new toolsmith's job block.

any block ideas for the the new toolsmith? or ideas about using villager trading to duplicate the armor trims?

I've always found it very clunky and awkward the way armor trims are duplicated. Duplicating in crafting table feels like such a boring way also. Have the player engage in a variety of different existing mechanics. Or make a new mechanic for the trims specifically--have a runesmith villager handle things regarding slight unique bonuses based on 

1. armor piece

2. armor material 

3. armor trim

4. armor trim material