I feel like that's a bandaid that ultimately punishes casters too much or makes melee too powerful. Really all the AOE skills just need damage drop off or they need to share an ID so they can't stack. Ultimately I don't want to rob people of their tools or target individual classes, I think that the changes need to be universal but still directly benefit the health of the game as a whole.
"Just make Melee take less damage or hit harder" doesn't resolve the issue.