I remember earlier on in WoW, healing addons were powerful to the point that by pressing one button you could autoheal the lowest hp person in the raid, and not only that, but if someone else healed first and your heal would have overhealed, they could autocancel the cast. Of course Blizzard realized that was a tad much and nerfed all that reverting everyone back to the traditional wackamole we healers all love/hate.
I'm just wondering which side of the UI nerf is in play here, since it will probably effect my decision to play healer or not.