Non Scholar player here, but to play devil's advocate I don't even think Energy Drain's DPS loss component is necessarily as big of a problem. I know, I know, DPS losses feel bad. I hate it on WHM too. But I also think a huge unspoken source of consternation with these lossy mechanics is that we also have two other healers in the role who can cackle at the concept of losing anything for their free healing, and THAT balancing difference makes the DPS loss feel even more stark. A loss in a vacuum feels bad. A loss when you can see other healers doing the same thing plus a lot more for zero cost is unacceptable.