I was never a huge fan of earth damage. Yet I understand it because this world is ruled my the elements and as such earth does a bit more then just batter people/monsters.
You know what would be interesting? If the reason why earth was removed from Wands is because they are fully embracing the whole "Dual Armor/Magic Armor attack tree" (which I hope they go with) and are going to make Earth a sort of exclusive to physical damaging weapons.