I'm not understanding the power of SCH I think.
(I preface this next bit to say that no animosity is meant in my findings, only my outlook.)

Broil IV hits for nothing
Mummification is janky and melee'ish range
Adlo heal and shield isn't worth the gcd
Expedition speed buff is "kind of" redundant with how sprint works
The Recitation mechanic being tied to the two longest cooldowns you have is awkward
And i honestly do not believe that that Biolysis damage or 10% debuff is very threatening

At least in CC I do not see a reason to bring a SCH over the other healers. FL is an entire different story however.