One change mentioned in the video that I wish would make it into BG3 is the ability to upcast spell granted through race abilities or feats.
Larian could also draw inspiration from the new spell lists (now divided into Arcane, Divine and Primal according to the spell’s essence). It would make flavor sense for the Wizard’s scribing ability to be limited to Arcane spells alone. As BG3 alredy relies on tags, it doesn’t seem insurmountable to implement.
