When I think DLC, I think actual expansion content. Avernus. Deep Underdark/Menzoberrenzan/Mindflayer colonies. Shadowfell. The Astral Sea and campaign to take Vlaakith down.
Restoring the full city of BG is something I think they should do with the definitive edition instead, while implementing quality of life features like transmog and maybe letting paladins dedicate themselves to divinities and giving Archfey and Eldritch pact warlocks proper thematic summons.
