Seriously... the difficulty settings haven't been implemented yet. They are coming.
Can you explain, in detail, precisely how different difficulty settings in BG 3 will change gameplay?
Of course you can't, because you don't know. I'm pretty sure that not even Larian knows what different difficulty settings will and will not change at this point.
Your position is essentially "stop complaining, I'm sure it will be fixed in the final release", based on absolutely no information and not even any public indication from Larian of the direction they intend to go with the game and difficulty settings. There's no point in us playing EA if we're supposed to shut up about anything we don't like and wait for the full game.