I see that rune essence is ingame, but it's not very useful.
My suggestion is that normal players (non-gold members) receive rune essence from drops and mining essence and only gold members/players receive pure essence.
Also, I would suggest that rune essence were to give 1 rune, and pure essence were to give 2 runes. So if you were to be 65 runecrafting and craft death runes, you'd get 28 death runes from 28 rune essence, but 56 death runes from pure essence while still receiving the same exp for it.
