BG1/2 and Planescape Torment even with limited technology were able to create a very detailed, believable and "mature" world. 3D games already existed at their time and they wisely chose what would fit best to portray their universe. In my view, they still (artistically) look good today.
Just look at the BG 3 opening cinematic and the current gameplay and you can see the discrepancy.
No game has ever looked like a cinematic trailer.
You seriously cannot compare BG1 and 2 to BG3 in terms of aesthetic. The resolution alone kills any comparison that you might try to make. I bet if they had today's tech 20+ years ago, BG1 and 2 would have been A LOT different, probably unrecognizable from what they are. They didn't have access to what Larian has access to.
It has nothing to do with the resolution. And I am not even comparing to BG1/2.
It is about keeping the coherence they established on their own opening. And it is nothing really hard to fix or to achieve.
They are not doing (?yet) because they don't want to.
What in the name of John Cena are you even saying? "keeping the coherence they established on their own opening?" Wtf does that even mean?
Visual and atmosphere coherence. You can see that BG2 cutscenes/cinematics (even if they were awkward) are coherent both in atmosphere and color palette. BG3 instead, you go from a believable and mature representation of FR on the cinematic to an artificial colorful, shinning, unrealistic FR.
And regarding this last trailer, Larian clearly doesn't have any quality threshold to release materials. Hopefully by Saturday we will have a better sense which direction BG3 is going. Enough of this discussion and will see what else content they have.