Mending should consume much more exp

As many people noticed mending is an overpowered enchantment which is also the reason why both elytra and mace become OP as well. The problem with the elytra is not the convenience but the pure domination over other ways of transportation, having single weapon-armor-elytra set (maybe a backup-one too) means you virtually completed the game cause it will never run out. Making mending require much more exp to repair items will lead to elytra nerf cause it would become a valuable resource, the one would not just use them to get from farm to the storage cause it would mean hard time repairing the wings before the adventure. If would also partially encourage people to enchant more sets, to have back-up wings, to use horses, boats, railways and generally balance a game to a better spot