Plus evil guys tend to not let you cooperate with them very much. They might begrudgingly be neutral to you but they don’t follow you from area to area with game long plot lines like the deep gnomes, tieflings, Halsin, etc. They are more like NPCs that just stand in the lair.

Minthara basically doesn’t have a plot line or story except “I’m a hot drow you can have sex with”. She should have some type of vengeance she’s after that is more compelling and goes through the game.

Evil is definitely underwritten, there’s no social evil route. You can go full mass murderer killing everything in sight, and you can act unpredictably and in a cruel way. But you cannot really be a villain in a way that intersects with the story except for the handful of major plot decisions where you can act wildly out of character and do something majorly dastardly for the whole world.

Wish there was more opportunities to be a thriving piece of shit sellout, a sniveling cowardly henchman, a manipulative mastermind amassing a huge army and fortune, etc. Why can’t I form a gang and take over a huge chunk of Baldur’s Gate territory to sell drugs, etc