While it is true that SCH as far as a healing class can pump out a nice amount of Dots, I'm not sure I'd ever go this route unless my party isn't taking much dmg and I can commit all my aetherflows to dmg. I'll ocassionaly throw out some dots on bosses and the random slightly stronger trash mob but at the end of the day my priority is healing and I think given the kit we have we are quite good at it.

As far as the original poster being that our job is primarily focused on dmg mitigation already, having the ability to put things to sleep and slap a 1k shield would be a little OP imo. Also, like someone said earlier soloing as a SCH is pretty solid. You just slap on Cleric Stance and apply dots, energy drain, and slap out a shadow flare while your fairy spam heals you. It may not be as fast as smn but then again you're smn and sch will always be the same level so take your pick.