I was just thinking of ideas that might work if a healer were to build up more mana than they do now. Lucid Dreaming and an additional method (Assize, Addergall, Card mana, Aetherflow) pretty much offers what is needed for all 4 healers to use their DPS rotation while using their efficient heal cooldowns. Extra mana regen after that would likely encourage a big mana spell finisher. With Roe's increased Energy Drain idea, it may be best to keep it to just self HP heals for this case.