Unique charms after 0.2.0g

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Gold, Magic Currency, Quality Currency, Flasks, Charms, and Runes are now much less likely to drop from monsters with high Item Rarity. These three changes generally result in around 20-30% more Rare Currency (Exalted Orbs, Orbs of Alchemy, Regal Orbs, etc).

src: https://www.pathofexile.com/forum/view-thread/3774660

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Spirit Possessed ... 200% increased Rarity of Items dropped by this monster

src: https://www.poe2wiki.net/wiki/Azmerian_wisp

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Shining Trail ... 25% increased Rarity of Items dropped by Possessed Monsters in your Maps

src: Atlas Passive Tree

Particularly in the case of Rite of Passage, Golden Charm (https://www.poe2wiki.net/wiki/Rite_of_Passage) but more broadly noticable with other unique charms, the interactions between rarity and charm drops mentioned above make any unique charm excessively hard to obtain, especially in SSF.

Personally, since patch 0.2.0g, I have not seen a single unique charm drop after hundreds of maps whereas before, plenty (albeit common ones) showed up. The amount of normal charms available for use with an Orb of Chance have also been greatly diminished.