I like the art; a considerable improvement over Dragon Delves’ covers (both of which I deeply disliked).
The character choice is puzzling, especially for Adventures in Faerûn. Is Valindra really that iconic to warrant taking up the full cover? I wouldn’t even place her among the top 30 most notable antagonists in the setting, but maybe I missed a Valindra fanclub somewhere. If I had to choose a Faerûnian lich for a cover, I’d choose Szass Tam or Sammaster. I’d also make them more lich-y in the art.
Heroes of Faerûn is better in this regard, and Minsc and Karlach are great choices from a marketing perspective due to BG3 (even if I personally don’t much care for the game). Vajra Safahr is fine, I suppose, though not the setting’s foremost wizard. She was also in the cover for the Monster Manual. Jarlaxle is the real puzzler here — would have been a better fit among the antagonists in the DM’s book, no?