Considering how lackluster and unsatisfying karlachs ''quest'' is in the game, she if anyone deserves a dlc that centers around her lol. Her and wyll both honestly. But regardless, adventuring in the hells would make for a cool story with or without karlach so i dont think a dlc centered around the hells is a bad idea at all.
Although I doubt that the ice-recording had anything to do with larian working on a dlc for bg3 but one can always hope.
