New Eyes of Ender

I don't know if this idea has been proposed before, but it would be a great addition to have multiple types of Eyes of Ender—specifically, 12 of them. The basic crafting recipe would remain the same, but you would need "essences" to combine with the standard Eyes of Ender. These essences would be found in various structures across both the Overworld and the Nether. This is intended to breathe new life into exploration; even if the drop rate were high, it would still encourage players to explore more.