For me, healing is only complex when the group is bad. When players are nailing mechanics, all I have to do as the healer is press 1-1-1-1-1-1-1-1-1... and Use OGCDs for the scripted AoEs. Its much more challenging when I actually have to spot heal, quick rez, emergency shield, etc., all while adhering to mechanics. To me, that's an issue - good gameplay is considerably less rewarding. Healing gameplay is overly simplistic because the balance of healing vs. DPS vs. utility tools is poor, as is their implementation. For example, as an AST main, we have close to a fun and interesting design, but our DPS kit is simplistic and weak, our utility (cards) are conceptually cool, but clunky, weak, and unreliable (as opposed to Mug, Technical/Standard Step, etc.), and we have LOTS of healing buttons that are never needed (Synastry, Neutral Sect outside of high-end content, Benefic I, etc.).