This definitely just sounds like you want Divinity: Original Sin 3. Larian announced Baldur's Gate 3 using 5e's ruleset, and you literally just want them to get rid of 5e's ruleset and make it D:OS3 with a Forgotten Realms skin.

I've got about 30 or so hours in EA, and for the most part, it's fairly faithful to the 5e system (although, there are no critical misses in combat, and a 1 on an ability check or save is not a critical fail, it's just a fail, per 5e rules).

Concerning the camp function, I find myself going back to camp fairly frequently - for once in 5e, I'm able to take a long rest whenever I want, so I'm expending all of my spell slots and abilities fairly frequently, it's a good feeling. Personally, I think the camp mechanic is fine as-is. Same with combat - Move > Action > Bonus Action > Pass seems, to me, to allow more freedom than D:OS's AP system, as movement eats up AP, and you're left with only enough AP for a single action, depending on AP cost. 5e's combat system just seems more flexible, more agile, with Pathfinder 2e's Action System being the best out of all three, to an extent (i.e. removing a potion and drinking said potion being two out of your three actions is kind of a PITA). Also, the fact that potions are bonus actions in BG3 is hilarious to me, as that's a common house rule as opposed to RAW, which makes them an action.

Overall, BG3's EA 5e system is fine, though, I do agree things like the Nettie encounter need to be a bit less dice-heavy - make it a single persuasion/intimidate/deception check. However, Nettie is a bad example, as it's not really something you're supposed to win at - it's a showcase of the world and its views on the Illithid and their tadpoles. If this situation happened to me in a real session of 5e, it would suck, but that's the way of Faerun - now I've gotta kill them, find another way to get the antidote, or die.

I would love it, though, if other characters could join in the conversation, or at least offer the help action. Actually, has anyone ever tried switching characters mid-conversation and using the Help action on the one doing the talking? I'll need to try that...