I've only played the original DOS but was a huge fan of the BG/IWD/NWN games. If they can tweak dialogue skill checks and make dialogue more worthwhile, i think everything else is pretty decent for early access. Can't really smash the devs for mechanics and content of a game not even close to being finished lol. I personally like turn based combat, but they do need to fix the AI so not every creature and their mothers go after the dang wizard though.
I missed BG and IWD but loved NWN, both from Bioware and Obsidian. And that's exactly the approach I mean

Perhaps the combats need to be kept within TB boundaries too, I just saw a fight with 15 characters, it's a lot. I understand the desire to show large-scale battles but are they adapted to TB?
I'm sure they'll improve the AI in due time.
i agree on the orignal post it's baldurs gate 3 not dos 3...
plus if you implement the dos ability system into it, you end up mixing a simplified setup built for balance with a complex setup set for diversity. dos is about challenge and tactics only, where you build around... wich doesn't work in a complex enviroment like it is in d&d. to build a d&d char... you need lot of customsation options to balance it for a campaign.
a very simple example deathward counters necromancers in d&d being helpless chips away heavy armored targets (actually dex based builds more likely), so freedom of movement would be nice, if you don't wanna be held in a hold person... you need that if you roll 1s often like myself... there is no 20 dice in dos stuff
it's saves, evasion, spellresistance, skill checks ect ect (u won't make the first bite a winner, if you forget the sauce)
tbh if you see the repeating rules of dnd video games, yeah it's fights are well known, i wouldn't mind an addition, but pls not the simplification route...
(edit) my point is, it is as it right now a very fight intense exploration, there aren't so many story/lore driven encounters. it has potential, i love the story but i miss the options, to explore and play around with. it feels a bit loot and xp driven. the fights themself feel a bit weird to dnd video games, but i won't argue about them as they are right now. the character still have no multiclassing implemented, so the builds do not vary much as well, usually i need a day to decide on a good build for a dnd game... this time i just click a class, maybe spells, and some skills and that's it. it doesn't matter as much, because i don't know what to expect of this kind of bg3. i cannot say the first bite was a real winner... i had high expectations and i was not even confronted with a lot of basics.
I think the 5th edition already adds more possibilities to differentiate the character and is less rigid, for instance anyone can use a longbow, it's just less efficient when the proficiency is not acquired. Feats should help too, though I don't know them very well in that edition, I could be wrong.
Please no simplification indeed! (I mean the mechanics, not those spells which wouldn't make sense in a CRPG of course)
I like that they add jumps, throwing items, moving crates, and so on, it adds to the possibilities without offending the ruleset. It's a bit of the limitation of a CRPG that has been removed in a clever way, by comparison to the table-top where you could suggest those moves.