I think a good direction for Elemental AoE is to make Earthquake totem consume from 50 to up to 100 mealstorm, increasing dmg accordingly, just like Earth Shock treatment, it would be really nice QoL change
*Edit
Just noticed that Earthquake dmg is physical, is it reduced by armor? so it means it deals 30% less dmg in most fights right? It also could be changed to nature damage