As an old skool player I would obviously just love a legacy DLC that adds one or two more old companions to the game. Aerie is most fitting since she's not very old; more matured and confident and you can show her having learned lessons from and maybe picked up a couple of quirks from others like Imoen or Mazzy or Jan. Plus it would be great for Minsc to be reunited with his witch. And maybe a Jansen (doesn't have to be Jan), or one of the other elves from BG1 (Xan, maybe?)
