This has been suggested by a number of posters in the past so I'm just going to mimic the sentiments here too - instead of having Dissipation unsummon the fairy have the fairy be afflicted with pacification and silencedfor the duration of the healing potency buff. Not only does this mean SCHs won't need to spend MP and Swiftcast to get their Fairy back in a timely manner but it'll also mean the Fairy Gauge will continue to charge when the SCHs are using their newly acquired Aether charges.
So, upon doing some quick calculations, even with the changes to Aetherflow, with the implementation of Lucid Dreaming as a cross class SCH's MP restoration kit has actually gotten better. At 960 MP / tick, all healers gain 6,720MP every two minutes. In order for the loss of the 10% MP restoration on Aetherflow to match this, a SCH would need to have 33,360MP which feels pretty crazy to me given my SCH in basically capped gear without melds is sitting at 18,000-ish MP. I know it doesn't speak to the other concern of how MP costs for the SCH kit has gone up as a whole but it's a small blessing at least for the loss of the 10% restoration on Aetherflow.
[Edit @ Aetherpact Discussion] While Aetherpact / Fey Union certainly doesn't make up for the loss of potency in the Embrace kit, I wouldn't go as far as calling it useless either. SCH always had to be mindful about how they use their resources and placing their fairy in ways that allow them to do their job while staying out of danger. Aetherpact just emphasizes these points further. Having a 5-6K "Regen" going off is nothing to scoff at and can give healers larger opportunities to DPS, say during a burst DPS phase where healing requirements are light but global buffs are going out to help get past this check (Battle Litany, Expanded Balance, Chain Stratagem, etc.). Aetherpact also gets around infirmity which may have some applications in the future as well. I find Aetherpact in its current iteration much much much more useful than Dissipation ever was at 60 - thought that's admittedly not saying too much either, sadly.