It seems odd to me that from levels 70-78 on AST, healing was horrible - a struggle to keep up with a double pull and spells with bad potencies, but when I hit 78 with slightly better items and slightly more skills, it almost became business as usual. It felt the same with SCH too (not tried with WHM yet) and when I was unable to barely dps I now can at pretty much the same rate as stormblood healing, no doubt because of better gear and slight buffs.
So was their aim to make healing harder or to put people off healing at all?