Thanks for the thoughtful responses. Much better than what I'm getting over on the subreddit.

The problem I have with "Health = Damage" abilities is it takes your DPS potential out of your hands. A lot of aggressive healers (read: my healers) don't keep their MT topped off and usually have them floating around 1/3 to 1/2 half for most of the fight so they can focus on DPSing without worrying about overhealing. I'm actually grateful that Upheaval is my only ability that scales damage based on my health because I'm sure I take a hit on that to benefit my healers.