The changes required aren't monumental although the DOS 2 engine may have major limitations for all I know.

1) Time - a clock and a light source that moves in sympathy across the sky. In essence a moving light or moon above you.
2) Spawn "stuff" and have them walk about the map hunting (wolves) , patrolling (goblins) etc. and unspawn after X time.
3) On rest roll dice and spawn/not spawn "stuff" in camp (risk). Higher risk in dungion zones and underdark.
4) Short rest moves light abit.
5) After XXX time have the goblin attack the druid camp regardless OR have the Tieflings attack the goblins to attempt to get on the road. Being backed into a corner like the tieflings would cause them to do "something" rather than wait to die.

That would add so much to the "lived in" world feel. Add a few minutes intro to each origin character showing their backstory and circumstances that lead them to be on the ship. This would add insight to the player to why their live sucks (Astarion) or how they got the gith box etc.

The world needs to react organically without the player interacting with it for there to be a sense of urgency and immersion. Nobody is asking for Larian to rewrite the entire game. Stuff plopped on the static map just standing there for days/weeks/ever waiting for a "trigger" from the player is just plain awful.

This ^^^^^ is real feedback and has been said again and again by thousands of players in every way possible. Over the past year I see 2 general repeating opinions,

1) BG3 needs to be a Balduers gate (5e) game here is why, followed by a detailed list of x - or words to that effect
2) Game is fun and pretty - dont change (5e) = bad although I now nothing about it

One of these ^^ is feedback one is not. Praise needs to be followed by criticism and vice versa.

Let's say it again. The game as a stand alone NOT Baldurs gate (5e) game is fun and playable and is better than DOS2. What make it batter ARE the 5e and BG lore elements not the DOS2 mechanics, story or origin crap. Asking for more BG elements in a BG game is not an unreasonable request. If this was DOS3 with BG elements I would be on the side of the DOS fans. It isn't.