Change Shade Walker so it can suit at least some defense?

Right now the one nasty mod from assbyssal rare is Shade Walker which does massive DoT that does not scale against any of player's defense (except ES obviously).

Armour doesn't work since it only reduce hit damage, not DoT for some reason??? And Shade Walker is DoT but also not an ailment which make Kitava notable node "Heatproofing" that give immunity to damaging ailment completely useless against it.

I think this mod can be tune down but obviously if player add more mods that affect mob damage, then the damage start to become overtuned again. So maybe change how this specific mod interact with other defense or change it to a known ailment like bleeding so player can counter it?