I have to say for the health of the game, and not the table top, the current new rules are better, because it offers exploration and potential for new builds. This is highly important. If you wanted original rules you could just opt for other dnd accurate games. As far as i have seen the current bg3 is fairly perfect out side of a few things.
There is exactly 1 game out (also in early access) right now that is accurate to D&D 5e rules: Solasta. And even this game doesn't have the full 5e rules license, so a lot of its subclasses and rules are new.
Originally Posted by Nouri
When it comes to accuracy, you can simply change the equations slightly to offer a slightly better accuracy rate. Having lower AC makes the game much more interesting in the way that it validates tanking oriented build more inline with current industry standards of using a holy trinity (heal, tank, damage) form of game play. This is highly important for validating specific fighter and cleric builds geared toward that feat. If it was easier to hit people these builds, and subsequently heavy/plate armor would be heavily invalidated.
What are you trying to say here? You say that "Having lower AC...validates tanking oriented builds" but then you also say that "if it was easier to hit people these builds...would be heavily invalidated." These statements contradict each other, as having lower AC means it is easier to hit people.