Yeah, essentially, once you get to level 16 you stop finding regular old enchanted leather. You just find feyleather. Similarly, you start finding starleather at 26.
If you wanted to make +4 leather... you can't! Because you have to infuse the material with magical energy, and regular leather can't hold that energy. It's like heating up a pot vs heating up wood. In theory, wood could melt, but it burns first. In theory, you could enchant leather, but it turns into a fell badger first.
If you wanted to make +4 leather... you can't! Because you have to infuse the material with magical energy, and regular leather can't hold that energy. It's like heating up a pot vs heating up wood. In theory, wood could melt, but it burns first. In theory, you could enchant leather, but it turns into a fell badger first.