Im currently a pally and druid healer. I feel im very skilled at healing. Ive always used addons like healbot and vuhdo to heal. Im planning on expanding to a disc priest (played one in cata and wrath). Want to get back to it. But since theres alot more attonement healing now, I just dont think these addons will work, and Ill have to go to straight keybind healing. Maybe im wrong. But look for input from other discs out there and what they use. Ie cliq/healbot/vuhdo/grid with mouseovers etc.