Those are just band-aid fixes at best
Your suggestions, other than reducing the MP cost of Adlo and Succor, aren't addressing the real problems that SCH has. The new skills don't mesh well with the SCH's kit. SCH gets real additional benefit from planning out how to use their kit, in fact, their new Fairy gauge actively encourages against it, wanting you to blow your Aetherflow stacks as fast as possible. In addition, SCH has really weak healing potential, having all of its real options tied to cooldowns and/or Aetherflow.
PS: They don't want the fairy to be the healer, they want SCH to be the healer, that's why Embrace was nerfed. They should have put the 50 potency lost back into Physick yet didn't.