I completely agree that elves are mostly treated like longer-lived humans with pointy ears in BG3. I absolutely love FR elves and there is a lot of interesting lore for their culture/biology/spiritual aspects, so it's disappointing to barely see any of it. At least the elf characters trance instead of sleeping.
On the appearance front, it's telling that the concept art/render for the eleven chainmail uses a male half-elf model rather than an elf . . .
Tieflings also feel too similar to each other. I loved all the weird tiefling traits and heritages you used to get in old Planescape, but WotC has ironed out all their diversity.