My self i handle healing 2 ways i have a cleric in group using macros that cast @focus set my tank as focus. then i use a Chloro mage to passive heal the party. Right now my spam key for dps and my tank is 1 i have 1 with several steps to send key strokes to target action groups. i have Tank Heals DPS action groups tank and heals get 1 spammed to their window the whole time. while it send in steps diffrent key strokes to the healer action group. first 3 heals are hots so each step casts the 3 hots then finaly step stays there for 6 seconds casting big heal then it starts over refreshing hots. so far its worked great in my balanced group of warrior mage mage cleric rogue i have all instances cleared up to and including KB.