My current thought process on SCH, in short, looks something like this:
Remove Embrace as just auto-healing and make Aetherpact something you have right away as your faerie's main source of healing. This gives you more control over who your faerie heals, and the faerie will follow whomever she's tethered to unless placed. This no longer consumes your fey gauge, and the potency is brought down to Embrace levels for balance reasons. Also, using faerie actions will not break the Aetherpact. Only manually canceling it, or the target running away from a placed faerie will break the tether.
The fey gauge instead becomes your main healing gauge, and Aetherflow is repurposed for offensive tools instead. There's no need to have two gauges that revolve around the same thing, in my mind, so splitting these two resources and enhancing both seems ideal.
Recitation changes to a GCD action that gives you 1 Aetherflow and 20 Fey Gauge on a 60 second cooldown with 2 charges that you get much earlier. In addition to specific faerie actions, you also have Feyshine and Fey Brilliance, mimicking a bit of the SMN changes while also making the transition from ACN to SCH less confusing to new players. Feyshine and Fey Brilliance change based on which faerie you have summoned. Eos enables more heal-focused actions like Indomitability while Selene enables more support actions like Eye for an Eye. These are all GCD actions that generate 1 Aetherflow and cost 20 Fey Gauge. As for separate faerie actions, Eos keeps Whispering Dawn and Fey Blessing while Selene has a new MP restoration action for you and Expedient. (The idea is MP becomes more of an actual resource and less background noise).
Your DPS actions as SCH would be:
Broil - Your standard DPS button.
Biolysis - Your instant cast DoT.
Miasmolysis - Restoring your second DoT that has a cast time.
Art of War - Your AoE, now also gives you a 5% crit buff when used for 45 seconds, making it useful in single target situations. Can still be spammed for dungeon trash.
Shadowflare - returning your DoT field that sits on a 60 second cooldown on the GCD. Also makes your next Adlo or Succor give you 1 Aetherflow.
Ruin II/Kaustra - Finally upgrading your mobility tool to something unique to SCH and not a 10 year old animation hand-me-down from SMN.
You can use Libra now to consume 1 Aetherflow which changes your DPS buttons for your next cast.
Broil becomes Fester, dealing double Broil's damage normally plus an additional 100 potency per DoT you've placed on the enemy.
Biolysis becomes Pain, a third DoT.
Miasmolysis becomes Bane for spreading your DoTs.
Art of War becomes Meltdown, an AoE of double Art of War's strength. Still grants the crit buff.
Ruin II/Kaustra becomes Rasp, dealing double Broil's damage and gives you 30 more Fey Gauge. A DPS loss over Fester but useful in a pinch if you need more healing power.
Shadowflare does not change with Aetherflow.