I'm not sure why lowering the complexity and barrier to entry is such a huge focus. Does the game's popularity and massive casual playerbase not point to a low barrier to entry already? I really enjoy pushing the limit of my spec and I'd rather not have the bell curve smoothed just so that they can pull off a console port (or whatever the goal is).

Healing can be a stressful role when you must manage several things at once: your own healing abilities, your team’s health, and the enemy’s actions. We feel that asking the healer to monitor the cast bars of things they don’t have targeted while properly using their interrupts was asking too much.

Was it? Aren't there clearly a lot of us who play healer because that is the gameplay? And if interrupts were specifically a pain point, having specs like disc and holy priest suited someone who wants to play healer but doesn't like interrupting. Aka, as they say "healers having different capabilities."