Planning to go full Warlock for my first playthrough. Celestial, if they'll let me. Otherwise, probably Great Old One, which will likely be good but might come back to bite me storywise... but hey, that's fun. Celestial is my pet favorite, though. If I could I'd just choose that class forever for the rest of my life, at least in tabletop games. My DM got totally jaded after a point and just stopped asking what I would play. :P I did switch up my patrons, races, and build types a lot, though, as well as backstory.
This is likely what I'd do with point buy and a half-drow, and it's probably also pretty close to what would be my RL stats. 8, 13, 8, 16, 14, 16. Otherwise I'd go aasimar: 8, 12, 8, 15, 15, 16.
If you could roll, however, I might well go Hill dwarf instead, because I like transcending expectations. Everyone thinks you'll be some sexy, spooky-looking tiefling or drow, or at most an eerie aasimar, but nope, dwarf. I'm around dwarf height IRL too, so that's the perspective of the world that I'm familiar with. I realize Fiend would probably be more optimal what with the Con bonus, but meh. I like the unexpected. Without point buy, I just don't feel as locked in by race.
If I hear that the social stats are truly useless in conversation, however, I might well adjust this. Otherwise, if it's even somewhat rewarded, I really want to play a more socially/intellectually-oriented squishy character who is the Face of the party. That is fun for me.
Should they let me, I would absolutely go Cloud Dwarf, Tome Dwarf, or especially Ethereal Dwarf or Dwelf. I like oddities that might face racism or just plain racial confusion.
