I've almost two full (afaik

) playthroughs of BG3 (one Tav, one "good" Durge), and I'm now on my 3rd with an evil Durge (start of act 2). The first two characters were high elves, the 3rd is a lolthsworn drow. And as much as I love the game overall (it's awesome), I'm a bit disappointed in how elves are depicted in it.
- General: Elves seem overrepresented and culturally assimilated in the game. There a lot of elves in the game, but almost all of them behave as long-eared humans. Just being there as whatever is needed (farmer, waitress, Ilmater priest etc.). As if in the Retreat never happened, and they don't have an own culture, language, religion. The only trait which sticks out among elf NPCs is that they are on average more xenophobic. But otherwise they just behave as humans. Nothing is ever mentioned for example about why a wood elf would be a Councilor in Baldurs Gate. Or a random sun elf smith, Ilmater priest being there etc. They are all culturally behaving as Baldurians. Basically there are no other elves in the game. Except for one - the Shadar-Kai in act 2 is done well. That feels like someone actually had interest in that kind of elf and made something out of it.
- Companions: The same is true for the companions. If you compare La'zael to Astarion for example, there is nothing specifically elven about Astarion. Besides his ears. His identity is 99% being a vampire spawn and Baldurian noble. Caveat, I've not romanced him, nor played as him, but he has been a party member in all 3 playthroughs. And as far as I know he never even says one word in elven or does anything specifically elven, or references to it. I don't think it has to be as pronounced as with La'zael, but there is nothing. Halsin is similar. He's a druid. There is a bit going on with him being old, but that's it. Besides elves being xenophobes, longevity is the only other trait which is mentioned once or twice when you play as an elf. Which leads me to the next point:
- PC: When you play as a (high) elf, it almost never comes up as a topic. Because elves are so normal in the game you have almost no specific interactions with anything. You almost never feel like playing as an elf. The biggest problem, for me at least, was because sleep, dreaming and memory being such important topics in the game, but it's never referenced in the game that elves don't sleep, usually don't dream and how devastating it would be for one to have no memories. Basically an elf, until they get their memories back, would run through the whole game without being able to "sleep" once and relax, it should be devastating for them not being able to access their memories. Of course, this could easily be solved with the tadpole macguffin, because there is a limit on what the devs can do for just one race. But it's not even mentioned at all. And there these constant references to sleeping etc. which make no sense for an elf. I think the elf chapter in Mordenkainen's Tome was done really well. They put a lot of meat onto how Reverie works and how it shapes elven culture and psyche. Sadly nothing of it is in the game.
Besides longevity and ears (kinky earplay is in the game, so that's a plus I guess) nothing else comes up either (melancholy, elven magic, language, etc. no interaction at all with any of that). And even if finally someone reacts to you being an elf - like Minthara insulting you - there is not interaction - no insulting back the drow, no clever remarks, nothing. Neither is there anything with the Shadar-Kai, Astarion, Halshin or any other elf in the game. If you appreciate art, magic or anything as far as I know there is no specific line for that either (like "you should work another 50 years on that, even a lame, old joke like that would have been better than nothing in my view).
- Looks: There is a whole threat about it, but in short, from the skin (smoothness), face to body, there isn't anything specifically elven about the elves. Again they mostly look like humans with long ears. For me that's the least important topic though, if you aren't zoomed in, they look elven enough.
If you play as a lothsworn drow this is done so much better. Of course, like with the Githyanki, elves are not as unusual, so I don't expect the same kind of dialogue, but really there is almost nothing, and you never feel like you are actually playing an elf in the game. In fact it felt so weird and out of line with the Forgotten Realms, I went back to the books (Sword Coast Adventure Guide etc.) and checked if there had been any changes to elves, but didn't find anything.
I know this won't change, but maybe for the next game they could do a bit more for elf players. It's usually a sizable part of the player community, and not everyone just plays them just for the looks.