I would be fine with increased incoming damage only being a thing on Savage and higher. Dungeons are something that is blown through for roulette rewards, and normal trials are part of the MSQ. Now S-E will never do this, as it would leave weaker players with less to do between content patches, and "bored healers" are probably a small fraction of the playerbase.
The problem comes in when the "tough" content is still mostly glare spam. I want to heal in this game - the class feel is great - but the content tuning makes DPS much more rewarding.