This game was never suppose to be litteral transcript of tabletop rules, as Swen told us multiple times in countless occasions ... Some people still presumed it will be. :-/ I feel for them, but that will be probably all. :-/
I hope someone will create proper DnD mod fo you tho.
Exactly, I don't know how much clearer Swen has to make himself. He actually said that BG3 is meant to be "first and foremost" a video game in an interview from last year. In a recent interview with Eurogamer, a month ago, Swen even said that they can't do everything in tabletop DnD or they will never finish the game because that would require more people to be hired. In the gaming industry, you have a deadline and things need to be done before then. He also said that they have been given the freedom (most likely from WOTC) as with previous BG games to do what they want with this game.