Grindstone or other new block switch enchantments

Grindstones have 2 slots for entry, it should have 2 slots for exit. I have a concept where you could put for example; A Sharpness 5, Unbreaking 3 Iron Sword and a normal book, when you remove the items, it could be an unenchanted Iron Sword, and a sharpness 4, Unbreaking 2 book. That way if you find a bad durability sword but with good enchants, you could get your own good sword and enchant it with decent enchants. I think this would help change how people treat bad durability and the make the Grindstone a more useful and more often used block. I hope the developers see this and add it to the game. If your seeing this, have a good day!