SCH only has its lowbie heal because its fairy acts as a supplement. That being said, SCH definitely needs something. First of all, locking so many of its skills behind Aetherflow is a royal pain, which makes SCH a very poor class at emergency recoveries. If you don't have the Aetherflows to use your powerheals, your party will die. Of course, you can sacrifice your fairy and gain a new stack, but that essentially leaves you with no "Physick II", as indirect as it is, and those three extra Aethers won't last long in a pinch. SCH also has poor MP sustain in bad situations as well. If everything is going smoothly, SCH will have no MP issues, as the fairy lessens the need for constant heals, and the MP restore from Aetherflow is enough. But when things go south, SCH has nothing like Thin Air to help them out, nor do they have the insane MP regen potential of AST, with Ewers and cooldown-reduced, 31s Lucid Dreaming. While I wouldn't say Fey Union is completely crap, it is very situational. The same could be said for its other abilities, but even more so. Increasing the SCH's crit rate temporarily just makes it even more of an RNG-reliant class. Forcing any healer to rely on random crits is not a good idea. Healers need consistency and control far more than they need random burst heals/shields. Meanwhile, Excogitation is one of the most useless skills I have ever seen. With the rare exception of situations in which the SCH has to move out of range of or otherwise cannot target a party member, it can be useful. Otherwise, they might as well have given us a gimped oGCD instant heal. Good healers should already be pre-casting their heals to instantly restore the target's health after they take a hit. Excogitation can act like Essential Dignity or Tetragrammaton, but it not only has a lower potency, it only works at sub-50% HP, which isn't going to help if the tank suddenly needs to be at 100% to survive a tank buster while they have 3 stacks of Vuln+.