Give us some kind of roadmap or overview for what things are leftovers from DOS2 (that will get fixed) and what you implemented consciously. But first lets talk things that are done well:

Class changes to bring them up to date with a more modern 5e experience. Ranger was praised since the start and the sorcerer is a good start, too. These things are great, and you should keep it.

But now a few sins.

The conditions. Larian, my blessed dudes and dudettes. Why? Frightened taking over my turn and making me run around like a headless chicken? A little reminder what it does in 5e:

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A frightened creature has disadvantage on ability checks and attack rolls while the source of its fear is within line of sight. The creature can't willingly move closer to the source of its fear.
See the difference?

Lets have another very bad boy in here: being prone. Automatically losing concentration? Losing my turn also? Tsk tsk tsk... lets have another look:

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A prone creature's only movement option is to crawl, unless it stands up and thereby ends the condition. The creature has disadvantage on attack rolls. An attack roll against the creature has advantage if the attacker is within 5 feet of the creature. Otherwise, the attack roll has disadvantage.

Also: standing up takes just half my speed, and not my whole turn. Also also: we should be able to drop prone on purpose. It has advantages.

Other sins:

Homebrewed spells. Again. Whats going on here? We all were happy that the puddle fiesta was seemingly mostly over and now we get chromatic orb with new weird mechanics? I have to be honest: that was a let down. Please Larian, it was fun in DOS2 to play with ground effects, but this is 5e. One shock spell is not going to provide electricty in a puddle for 2 rounds. Things like flaming sphere being a creature on initiative is just weird and wrong (and hopefully just a WIP).

Like I said in the start, those things are concerns for the community since day 1 and it would be so so so helpful to just have some slight insight or roadmap for what is ahead. I understand you have to deal with a lot of rewriting the engine to fit 5e, but trust me: it will be worth it. Don't try to hack it. If you could just tell us your intended vision we could give way better feedback in this EA. Things like reactions for example are a thing with concerns since EA launched. And we have simply no idea if you guys are happy with the hacked version or what your plans are.

This post comes with the best intentions as I see BG3 as a game with the potential to be genre defining for years to come. Lets make it one of the games of the decade!