Seriously. If you can't tell standing in glowy, fumy, poisonous/dangerous stuff probably isn't a good idea why would you save them? I have seen DPS to openly admit to not moving because they assume the healer will heal them through it. That may work in the next 2 - content patches when the gear outscales the dungeon but not now. Stop enabling bad DPS to continue to be bad, they need to learn to move when they are standing in shit.