The DPS rotations don't need to be any more complex but the interplay between Healing and DPS should be more intricate. Every Healer should have DPS spells that become Instant Cast after using certain healing skills and Healing Spells that become Instant Cast after certain DPS skills. Imagine if using Stone made your next Cure instant cast or if Physick made your next Broil instant cast. Having skills, traits and procs that truly combine DPS with Healing would make it obvious that Healers are meant to do some DPS and also encourage it without punishing anyone for not being able to manage it.
