The release ensures that the DLC reads your base game’s registry and injects the correct audio files and localization strings. It also allows you to switch the game to your native tongue, preserving the cinematic immersion.
If you want (Lair of the Shadow Broker, Arrival, Overlord, Kasumi – Stolen Memory, Zaeed – Price of Revenge, weapons/armor packs), your best option is buying Mass Effect Legendary Edition during a sale (often $10–15). Mass Effect 2 DLC Pack -PC Multi6- Free Download -Extra
Happy hunting, and remember: "I should go." The release ensures that the DLC reads your