Ruin II replaced with Miasma: Very nice
Physic upgrades to Adlo: I agree enough that I've also suggested this
Lustrate upgrades into Excogitation, Excogitation CD removed: I agree enough that I've also suggested this
Dissipation: Good start, there's plenty of other stuff that I'd look at. Like that 3min CD, dividing everything by 3 was a potential idea iirc (so, 60s CD, 10s duration, generate 1 aetherflow), it's not often we need 30 whole seconds of buffing our 'spell based healing' specifically, but a quick 10s boost for a couple of well placed shields could get a lot more uses found I think
Aetherpact: Interesting, and solves the 'Excog cannot top someone who's between 51% and 100% HP' issue. Rather than being 10 gauge, I assume it'd function better if it were stronger/costed 20 so it feels chunkier, maybe like 500p/25 gauge?
Energy Drain decoupled from Aetehrflow: Possibly interesting way to make it feel less bad to have to use a Soil, but it introduces the classic issue of 'what if I don't need the healing, what do I spend aetherflow on'. Personally I'm not too stressed about overcapping and just using AF CD when I still have 'more than zero' flows left but others are not me
Whispering Dawn upgrades to Fey Blessing: We're trying to make SCH and SGE feel more different, not more similar. This is just Physis 2... 2. Blessing's issue I think is that it doesn't cost gauge anymore. Giving it a gauge cost again would allow for the relative strength of the skill to be increased to feel good to use again
Broil IV now spreads DoTs from its target to enemy targets within 5y: indifferent
All in all, pretty agreeable
edit: an idea, one which will not be received well: Energy drain is changed from 'deals X potency damage' to 'Requires Bio or Miasma to be on the target. Reduces the remaining duration of one of those effects, chosen at random, by 3 seconds, and deals damage equal to the potency of the damage over time that was consumed'. Or some such wording. Basically, put DOTs up, get more EDs. Use EDs, speed DOT ticks up. Potentially the game chooses the same one multiple times compared to the other, now you have to refresh Miasma while Bio is at 6 seconds instead of the expected 12. It's less punishing to 'not use ED' in this case because it's not losing 100p, but instead 'one DOT tick' which is, what, 70 for Bio nowadays?