You guys forgetting that Seal of Blight is primarily a vitality component. It converts phys to vit. The acid one is Seal of Shadows. Why a vitality component grants an active that’s mainly acid and is in no way compatible with the prevalent vitality caster piano playstyle? Why indeed…
I don’t care about Acid Purge because it’s weak and clunky. But I think the real problem is that becasue of it vitality has no decent weapon components. There’s the adcth focused Haunted Steel but it’s also quite incompatible because most vit casters got little weapon damage. If you look around build threads and discords you’ll see the best vit builds use generic components, usually defensive ones. Not because they want to but because they got nothing else to take.
As for Mad Lee’s proposal, I don’t really agree that Acid Purge should be vitality. I think Acid Purge should be moved somewhere else. And the vitality “Seal” component should get something else. Ideally a granted skill that provides passive damage (would be original) and not a channeling skill which can’t be effectively used as a filler between many vitality casts.
Another solution would be to buff Symbol of Solael to include vit dmg, and buff the numbers.