Adding to the thread, I also have some suggestions

1) There should be a possibility to import your character from different saves, especially after old saves do not work anymore.
2) I don't see telekinesis anywhere in the game, and it would be useful sometimes.
3) In combat, thing like shooting a back of an opponent should have more impact on the denfense rolls. Same goes to for example jumping to the vicinity of the enemy. The size of the enemy should influence the hit probability, it is so stupid that the archers can shoot small weak creatures and miss the big ones. I know it doesn't comply with the D&D but in game it just looks stupid. If anything, just change the information on hits from "missed" to "no damage" or something. I feel like these would make huge impact on tactics in a battle.
4) Cinematics are great, but are lacking environment sounds, and the models are either colliding or not touching at all, leaving weird spaces. You have decided to go with model close-up during the conversations and cinematics - it needs to be done very well or not at all, because it is destroying the climate of a game. Also, the models are always jumping / shifting space after the conversation. Moreover, an option for your character to have real voice in the conversations would be great. I don't feel like reading out loud my parts, and it just feels weird that everybody is talking, and my character is a mute.
5) The world is beutifull, but empty. Lots of passages that lead to nowhere, without anything at the end. Walking through the game for the second time, I find myself stray through the woods for no reason. More perceptiveness checks would be awesome.
6) The nautilius is lacking mind flayer in the capsule on the helm level
7) Short wait should give you 1 of the spell cells. Right now visiting camp every battle is needed if you want to enjoy the game.
8) Please, just pretty please, add more dungeons. I know that underdark is a big map, and offers quite a bit of fun, but similarly to the surface it feels empty. I feel like the titular element of D&D are dungeons. Lots, and lots of dungeons. And they, so far, have not been emphasised in the game. Merely a boring selune temple, and a wizard tower... Why arent there endless caves under the Silvanus grove?, why not add more caves like the Owlbear's one?, why overgrown ruins give like 20 minutes of play?. The world need something to be explored, not some generic dungeons, with 2 boring battles and a boss fight (spider queen I'm looking at you). It would be nice to be amazed, every time I enter some underground location, wondering if the game lore will ever explain to me who, why and when have created this. I wouldn't mind getting lost, solve some puzzles or dwell for some time in the ancient ruins of some gods forsaken forest. To feel the longing and need of watching the sun rise and feeling it's heat on my face. Right now it's in-n-out situation almost every time.
The game right now is on the right track ( I love it actually), but the gameplay is very generic. The world feels empty and it doesn't give you the feel of dangerous exploration of the mysterious world of D&D.