What you're doing with the rules in Baldur's Gate 3 is not the best way to make the game fun and dynamic. You're aiming to do this to the detriment of D&D 5e. Remember it's a D&D 5e game and was marketed as such, so the dissatisfaction from many tabletop players is comprehensible. See: It would be better if the game used D: OS rules in its entirety, so no one would come looking for D&D 5e.
Firstly, one thing must be clear: D&D 5e can be fun and dynamic without breaking the rules (even as a videogame). What it seems is that you judged D&D 5e boring and started adding random things (many from D: OS) that in the end seemed unfitting and only subtracted from the game. 5e gives room to creativity, and does it within the rules. We are used to think carefully about action economy, but in BG3 it was taken out. We are used to read the spells/features to explore them to the limit of the rules, but in BG3 they were changed and behave differently than the official ones (thus removing our references). We are used to thing what can be exploited in the environment, but in BG3 we don't need to think about it, because all the game BEGS to be thrown/exploded/triggered at the enemies.
It's disappointing, to be honest. With our references taken, it's hard to play BG3 after playing D&D 5e, and the inverse is true. Feels like I'm playing another version of D&D, and many things I learned (monster power; specific spell behavior; builds that work on certain conditions) don't work here because many things were changed. I tried to ignore it at first, but there are so many things changed that you can't run from it. I left the game aside for this reason, even though I found it interesting aside of the mechanics. Please Larian, rethink your take on the rules and make them more faithful to 5e.
Here's a list of "anti-5e" things I remembered with some comparisons and comments:
Annoying:- High ground and low ground affects hit rate. I wonder if it was added to compensate the removal of cover rules.
- 5e's optional facing rule is mandatory in BG3. There's currently no way to disable it.
- Ranger Class was completely remade. You have your arguments, but you didn't leave a choice to play with the official 5e Ranger, which is sad.
- Jumps are incredibly unreal. The height one can reach with it is unbelievable (makes me want to play as Grung).
- All skills have a buff-like animation and a hell of a ceremony to cast. Ex: one accumulates the ki when DASH is selected and becomes a super sayan it's used (what a show!).
- Dipping makes no sense. You can make your metal weapon get on fire (without oil or magic). When you want to shoot flaming arrows, you dip your... your wooden bow on fire. The bow remains fine, and also your hands (but at least the arrows catch on fire when you load them...).
- Magic items (and ARTIFACTS) are absurdly abundant in BG3.
Action Economy/game balance butchers:- Every weapon (even mundanes!) gives you a special ability. Ex: spears have a thrust attack that passes throught enemies. These abilities doesn't exist in 5e, and should be rare (they are things to have on SOME magic items/artifacts).
- Jump is costing a Bonus Action. In 5e it's part of your movement and costs nothing extra.
- Disengage is joined with Jump and costs a Bonus Action (this one is BIG). In 5e it costs an Action and have no relation to Jump.
- Shove is a Bonus Action in BG3, and the target flies back as if there's no air resistance. In 5e it's an attack, costing an Action. Also they only recoil 5 feet in 5e, but that's not incredibly important.
- Hide in BG3 is a Bonus Action. This destroys Rogues' shine because they are some of the few that can Hide as a Bonus Action in 5e with their Cunning Action. It normally costs an Action.
- You cannot take the Dodge action in BG3. In 5e it's one of the ways to remain in a strategic position blocking the enemies' path and dodging attacks while your party move/attack/cast spells.
- You cannot take the Ready action in BG3. This is sad because it's a very important part of the strategic combat D&D 5e.
- The way the Reactions are handled in BG3 is very poor. To work properly there should be an option to get prompts asking if you want to use your reaction. You can't optimaize 5e combat without this.
- In BG3 you can't willingly get prone (to get protection from obstacles and give disadvantage to ranged attackers).
- You currently can't take Cover in BG3. It changes how some spells/traits work.
- Getting prone robs you a turn in BG3. That's not what happens in 5e. It only takes half of your movement to get up.
- You can't use the Help action in BG3. In 5e, you can use Help to give advantage to an ally's to perform a task (check) or to his next attack against an enemy.
- You can't administer a potion to an unsconscious creature in BG3.
- Food heals you in BG3. No comments...
- Potions cost a Bonus Action to be consumed in BG3. A potion costs an action in 5e.
- Familiars all have different abilities. In 5e their sheets are like those of the monsters and there are no such special abilities (blind, etc.).
- Mage hand attacks and throws enemies/things in BG3. In 5e it can't carry more than 10 pounds and cannot attack...
- In BG3, Grease spell is flammable. Grease spell in 5e is not flammable. It's magical, not chemical, so chemistry arguments aren't to be taken as laws. Also, aren't already consumables that create flammable grease?
- Most elemental spells (even cantrips) create elemental terrains. This one is hard to diggest because it destroys game balance, changes expected spells' behaviors, and drastically alters the dynamic of 5e combats just so it looks a bit more like D: OS.
- This one is HUGE: the Challenge Rating system was disregarded, and monsters now have levels. In 5e, spells, traits hit points, etc., defined the CR of monsters. Now that they have been recreated and have levels, all experience 5e players had on tabletop is useless to deal with it. You see a monster here, know it's different from the ones you'll see in 5e. You see a monster on 5e and came here with some expectation, get ready to get frustrated. We have lost our reference to guess the power of the enemies. This causes derived issues such as goliath-strong goblins and a hag using spells without a coven.
Mind you: I know DMs are free to create their monsters in D&D 5e (and I do it), but 5e gives many sheets and tips as reference for you to change them and still make sense: if you change too much it would lose the likeness to 5e monsters. Change everything and things stop making sense. - Environmental effects are everywhere, tons of barrels of oil that not only burn, but explode (got to be nitroglycerin). There are lots of things that explode, cause an AoE or leave a pool of something. BG3 is... pulsating.
Before the accusators come, I'm no spokesman of anyone. But from what I've seen, these changes made many other 5e players upset. I myself won't lose hope that this game can be fixed before launch. I know Larian is competent. They only need to want it half as much as some of us do.