You may find yourself DPSing less as you progress through HW dungeons if your tanks and/or DPS aren't geared with 2.0 endgame gear (augmented Ironworks and dreadwyrm). That being said, leveling SCH after 50 is still pretty much the same, you will find the new abilities rather situational. Indomitablilty is the best new skill for aoe healing but requires more aetherflow stack management. Don't overuse emergency tactics + succor.