A few points I'd like to make.
The 1111111111 examples is not really true if you play optimally. For WHM you have Dia, Assize for damage, and the lilly heals you can use just for mobility without losing dps. Making such exaggerated claims hurts the overal cause of getting more fun gameplay for healers.
In the past with a more complicated SCH there were constant fights between SCH and WHM players. SCH players felt they were entitled to higher performance due to complexity. And WHM player unhappy about their lower performance. There is no good way to balance that.