It's a double standard for WHM (but it's obvious why we can't generate lilies), not really SCH.
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From a video I briefly watched (I clicked off it because I didn't want to spoil too much of the new dungeon) it appears like SGE starts instances with a full stack of Addersgall. The clip I saw was a SGE returning to the start of the dungeon after a wipe, and they were given a full stack upon respawn. Not sure if this changes anything for people though, because SGE definitely does generate Addersgall out of combat. Feels like if they don't want SCH forcing everyone to wait 60s prepull for Aetherflow to come back off CD, they could just give Scholar the same thing where you start instances with a full stack too?
Instances start with 3 full stacks of addersgall and take 60s to fully regenerate, aetherflow will function the same way where you start a fight at 3 stacks when you pull and wait 60s for 3 more. Aetherflows cooldown also doesn't freeze outside of combat, its ticking down or sitting there ready to press. Sage cannot overcap and store 3 and have 3 more at the ready with a cooldown like a scholar could before. So to me this is perfectly acceptable and balanced. To "rectify" it would put sage at a disadvantage since they can't just fill their gauge with a button. Think of how things work and compare the two systems objectively and you'll see they're the exact same but presented in a different way.
Side note........stop asking for stuff to be nerfed, that's too rampant of a problem around here especially when there isn't even a problem to begin with.