New feature for the grindstone's second Slot

FI have an idea to add to Minecraft, and it is for the grindstone. Basically, now you could put an empty glass bottle in the second useless slot of the grindstone, and when you disenchant a tool, the bottle will become a Bottle o' Enchanting. However, it will not give you all the experience you spent on the enchantment, but rather it will take away 2 levels. For example, if you spend 5 levels of experience on a tool, when you disenchant that tool, the bottle will only give you 3 levels of experience. Additionally, there could be Bottle o' Enchanting Bottles that, instead of giving you experience little by little, would give you full levels. This method through the grindstone would be the only way to get these full-level Bottle o' Enchanting Bottles. Thanks for reading my concept. Have a great day