It looks like you'll be able to play Githyanki in Balder's Gate 3. Also Drow. I'm not sure I'd play either one, but it suggests the game will let you be evil. I've always been wary of CRPGs that let you play an "evil" character. Most of the time, it just means you can be a jerk, or steal stuff, or you get dialogue options to talk to people like a [tool]. You're never really a villain. Some of that's because the writers of a CRPG have to, y'know, write. The villains are typically the engines of these stories. I honestly don't know how you'd write a CRPG where the player truly drives the story, making things happen rather than reacting to events and doing things other people tell her to do. I used to DM tabletop games, and that was hard enough when I could get instantaneous feedback from the players and make things up on the go.