Since it's pretty easy to accidently lose the enchantments of an item or the whole item while repairing it or salvaging it on a gold block / iron block, it would be good in my opinion to have a kind of cooldown of 2/3 seconds before really salvaging / repairing in the gold or iron block, like a double right click and then for 3s there is a text with a loading bar like reloading a gun that says to right click again to cancel.