First they need to make inferno the least rare if we gotta spend 5$ to get aqua we always get. If they swapped them up a bit it would make a lot more sense tbh. Even though none of us buy them, it only makes sense.
Also possibly using (for ex) 20 mith you can slightly increase your chances of successful enchant by a certain percent. It might increase pvp/ war participation!
As much as I would (and I'm sure the rest of KaW would) enjoy for this to happen, it won't, for the sole reason that this would lose the devs more money than you can imagine. Its already a lost cause bro, you just have to be able to see the greed in front of your eyes.