Villager trade for redundant horse armor

As you progress further in your world you will accumulate a lot of horse armor. Whilst theoretically golden and iron horse armor can be smelted, I feel like there is no use for more than one horse armor of each type. So in order for all the redundant horse armor to not be completely unnecessary I would suggest to implement a villager trade (for example for the armorer) that lets you trade horse armor for emeralds (like around 10 emeralds). This would also make exploring more fun as you would not get disappointed anymore by finding your 12th golden horse armor, since this would be like finding 10 emeralds now. Thank you <3