Lumaterian

Massively increases the viability of Conjure Barrage

Changes the look of Shadowheart's starter armor

Gives War Picks the Versatile property

Ups the damage of Tridents to match other similar weapons

Ups the damage of Greatclubs to match other similar weapons

Gives Maces the Light property so they're on-par with other similar weapons

Enforces DND 5E's metal armor rules for Druids

Some changes to make Witch Bolt less useless

Lets Potent Spellcasting work with all cantrips

Adds some extra backgrounds from DnD 5E sources, adapted for BG3

Enhances Barkskin and Stoneskin, so that they're actually useful

Adds more Metamagic options and choices

Implementation of Favored Soul Sorcerer from Unearthed Arcana 3

Adds the Weapon Training feat from OneDnD UA2

Implementation of The Undying Light Warlock from Unearthed Arcana 10

Implementation of Oath of Heroism Paladin from Unearthed Arcana 62

Gives Hamarhraft some extra oomph

Implementation of Zeal Domain from Plane Shift: Amonkhet by Wizards of the Coast

Addon for Pieroerri's Divine Soul (Revised) Sorcerer to remove the Compatibility Framework (and BG3SE) requirement

Gives the Elixir of Health the 'Everlasting Strength' treatment