Guys, I'm sorry you feel that way and I used to as well, but after spending a lot of time playing the game and also reading a lot in r/dndnext over the last couple of years I've realised that D&D has a lot of imperfections. There's no point slavishly recreating it RAW. Even the developers have regrets and are doing surveys to see what people would like changed in 5.5E – which at this rate will come out just after BG3. So even if BG3 was a perfect adaptation, it would only be rules-accurate for a year at most. WotC is even deprecating short rests, based on the most recent books where all the racial short rest recharge features have been changed or removed.
It's not just the RAW that I have a problem with. You can homebrew a lot of things in a way that still keeps things more or less balanced. Imagine what will happen if they add multiclassing. The game is already incredibly easy because exploits are features, and some fundamental mechanics are straight up broken.
If we get to high levels, a Sorcerer/Fighter/Thief will be unstoppable. 4+ Fireballs a turn depending on how you set it up. That's all from the changes to Quickened Spell, extra bonus actions, and Haste.
They could have solved the problems with the reaction system long ago if they mixed RTWP pause with their Turn Based system. You could even implement the Diviner Wizard's Portent RAW that way. It just needs a little bit slower animations. Instead we got toggles, meaning we might end up Counterspelling cantrips later.
Time is nonexistent.
Sneak Attack should have been a toggle, Rogues can apply it on any turn once. Opportunity Attacks, Commander's Strike from Battlemaster all could make great use of it.
Gale's and Astarion's introductions are still horrendous. Insulting and assaulting my character, then demanding that we join forces? And Gale still has the True Resurrection scroll, which can fix all of his problems, or Astarion's.
The dream rape is still in. You dare recognize it as the most obvious honeytrap in the world? Nah, you WILL enjoy it, and your party members will humiliate you as well.
My friends and I spent days doing nothing but giving feedback with the help of one of Larian's discord moderators. Result was: no communication, feedback ignored. During one of their Panels, when they changed (not removed) high ground advantage, Swen told us "it's all our fault". Even if he didn't mean anything malicious about it, it hints at how they design things.
And the list goes on...
I think I have every right to feel this way. I paid 60 bucks for this. An early access title where they wanted to "collect feedback". In reality, it was just for the funds and nothing more.
