Has to be a good balance between rewarding, but not making essences trivial. UWs are supposed to be hard work and prestigious.

I agree with Chunka on this. Would be a nice breath of fresh air to see a zone dedicated to essences farming. Maybe one with with different levels much like tofs. Or maybe a ring event in the rallos zek arena. Where the better you are at clearing waves of adds and bosses the more rewarded you are in essences.