It still woudn't by virtue of GCD efficiency if you spend a GCD healing you want the highest returns possible so if Adlo has even 50 potency more it will be prioritized, in the case of physick in particular there are also a bunch of extra problemas that would make a potency buff virtually useless like:
-The existence of the fairy, the low hp heal of Adlo works good with Embrace, one heals the hp less but gives a shield while the other only heal hp meaning overhealing is more easily avoided. Physick with higher potency would create overhealing scenarios more easily
-The rest of the kit, almost all of the Sch cds are hp heals so even if physick is used to weave the same previous problems happen (and if you're going weave ED why the fuck are you using Physick)
-The extra shield of critdlo making, in the case of a crit (which Sch can force even if its not optimal) Adlo a much more efficient heal
-The lack of meaningful mp management
Instead of buffing a trash heal they could simply lower the cd of Emergency tactics, make it unlockable at lv30, lower the mp cost and cast time of Adlo giving Sch an extra button to add a meaningful action that is used more times than once in a blue moon
