^The CoD4 map pack was an addition to a thriving online component that people were still enjoying, I doubt a single player add-on for GTA4 will be as big.
I wouldn't mind seeing the DLC be something over the top and unrealistic, in order to differentiate itself from the core game itself, maybe something as crazy as the jetpacks that were in San Andreas. Obviously you'd want it to be something more than just a item for $20USD, I just want it to be something crazy.







